Well to begin with humanity is kind of in a all your eggs in one basket situation. Of the ~13 billion humans alive ~11.5 billion live in on Earth. So 88% of the population is centralized onto one planet. So in terms of protecting humanity we want to encourage serious migration out to the colonies to provide redundancy should something (like say a Reaper attack or Batarian anti-matter bombs) devastate Earth.
Secondly Earth itself has issues.
Going by:
it seems like the wealthy nations of Earth are only just now (codex is from 2183 so a decade later) starting to transition from vast urban sprawl into sustainable arcologies. I find it extra telling that this description is in the same paragraph describing how the wealth of the colonies is flowing back to Earth. That suggests it only became economically viable with the influx of colonial resources.
I suspect, as strange as it may sound, that life out on the colonies may actually be
superior to life back on Earth. From the description of
Eden Prime:
it seems like the colonies benefited from having no existing infrastructure complicating the transition towards arcologies and large scale automated farming. This is probably part of the reason every member of the hyper-elite we see in Mass Effect is
off world. Earth is stuck playing catch-up.
Thirdly if the opportunity for notably financial advancement was already present on Earth people would already be taking advantage of it. Why the opportunity doesn't exist doesn't really matter, unless it is capital in which case we could help, but what does matter is that there clearly
is an opportunity for financial advancement out in the colonies. Especially given that Paragon Industries is dumping billions into various local markets (most notably construction) which creates even more opportunities.
Fourthly; evidance suggests that the cost of living on the colonies is lower then Earth. Arcologies provide abundant space for low prices (I have a post that has been siting half-complete for ages for the plans for a PI hyper-modular Arcology that demonstrates this) and most the colonies should have dirt cheap food (due to massive agricultural regions), electricity (fusion/Arc Reactors), and water (cheap electricity == cheap water). So even if they end up working minimum wage jobs out the colonies the migrant's lives should be financially better off. That is even before taking into account that the living conditions (such as clear air) are superior.
We were discussing the economic benefits? I don't disagree with the egg basket thing necessarily, but I don't see how it relates.
Valid point about the potential difficulty in growth on earth.
Why the opportunity doesn't exist matters a huge amount!!! If the opportunity doesn't exist on Earth and we don't know why. Why do we think that it will exist in the colonies without any questioning that assumption?
If what we're actually witnessing is Wealth flight from Earth into the colonies (looking at you Musk) then colonies could potentially be self sustaining on the basis of automation before plug and play came into the matter. We might be shipping people off to where they're not welcome and unneeded.
I mean if we think about it. If you're starting up a colony what are you going to ship there: Thousands of humans with all the life support equipment associated, or the bare minimum humans and enough robotics to Von Neuman the colony into something stable.
Oh it will certainly encourage a race to the bottom. However from a macro perspective that is actually a good thing. It certainly sounds bad but the reality is the only reason such a race can occur is because there exists people for whom a high skill but minimum wage job is an improvement over their current situation. It may be they were earning below minimum wage in another nation or they were working a job with worse labor conditions (like janitorial staff). Either way for such a race to occur there must be a transition of workers from a more disadvantaged labor pool moving up into the new general labor market.
If there isn't a pool of labor willing to work for lower wages the wages won't go down. This also ignores that so far our biology technology needs to be specifically adapted to non-humans. So for now, and probably the foreseeable future, Plug and Play skills are limited to humans. This is important because there is a galactic labor market. If local wages get too low we'll likely start to see labor migration as skilled human workers take up jobs in foreign markets. Given that humanity is just a small fraction of the galactical population such a transition would be very unlikely to have a significant effect on galactic labor prices so that sets a floor on wage decreases.
There is also the question as to what degree of social security exists within the Alliance as a whole and the various nation-states. One of the best wages to short circuit a collapse in wages is to remove the employer's greatest stick; starvation. If an unemployed citizen is guarantied all the basic necessities by the state then they have the ability to abstain from work until they find an employer willing to provide fair recompense.
I also expect a race to the bottom in labour conditions

. After all there is no significant training cost or trouble finding replacements. Companies can burn out workers like they're Amazon warehouse staff and not suffer (in the short term at least, we'll see how that Amazon is running out of people goes).
I do agree that some will benefit, however what I'm saying is that the equilibrium will eventually return the labour market to exactly where the disadvantaged pool are currently, except it will now include everyone who is a worker rather than just those who work the worst paid jobs.
Yes, while current professionals can try and refuse to work for less, its questionable if it would work for juniors in highly skilled professional positions if the Plug and Play means they're competing against the skills of a senior, what we'll just see is cycles of people willing to undercut the last generation. And eventually people will have to give in and eat.
I've outlined below speaking about the 3 month living cost assumptions but the scale of wealth inequality is absolutely mind boggling. Especially where remote working is a viable option, you could likely pay a team of poorer plug and players internationally to replace a single professional.
At the end of the day it should be absolutely obvious. The winners in this are the people buying in the labour market not the people selling.
E: You are correct we don't know anything about social security nets, just that in all likelihood the majority of the planets population lives in massive sprawling slums.
That being said Dark As Silver did raise an excellent point; just because you've made it to the colonies doesn't mean anything. You still need to acquire housing, the other basic necessities, and potentially a job if you didn't have one already lined up. Since we don't know what kind of social security exists we have to assume there is no and that we have to do it ourselves. I figure three months wages should probably be sufficient since that is the minimum threshold for an emergency fund and we are talking about per person here rather then per family. Plus these families are from the low end economically speaking so can probably make the money stretch further then the average member of the middle class. At the human wide average rage of 55,000cr/yr three months wages amounts to 13,750cr.
Add in the 500cr travel fee and we are now up to 14,250cr per person. At the million migrants per quarter that amounts to 14.25 billion per quarter. More noteworthy but honestly still a tiny percentage of our budget.
Frankly the wealth inequality makes me really unconfident about this estimate.
Unless
@tri2 is going to WoG handwave the ridiculous statement that less developed nations have barely moved, that means all the growth in global gdp capita happened in just 30%(?) of the worlds populations.
I haven't been able to find good numbers that don't require me to sum up all countries however this works alright
% of world population | GDP per capita at Current Date | GDP per capita at ME Date |
70 | $ 10,000 | $ 10,000 |
30 | $ 35,000 | $ 160,000 |
World average | $ 17,500 | $ 55,000 |
So following this, the cost of living in the colonies is probably triple your estimate, the GDP Capita of the 30% not the world average.
This also assumes that population demographics haven't changed rather than continuing to grow in the developing world and shrink in the developed which would inflate the difference even more. So we've got some pretty huge error margins here.
If PA is also taking an upfront role in this and we're expecting to have a massive impact, we're likely also going to have to do something to provide the infrastructure to handle this huge swell of colonies. Nobody is better off if they don't have enough tractors to farm food for the new arrivals.
So...idea. Can't we just expand to every SA colony available and even start funding/creating new colonies from scratch and just keep recruiting/enticing people and their families to join our company?
What do you think all those factories in production are?
We're already expanding to everywhere that meets our requirements.