As for the Inquisition...why?
Its legitaletly a group of rich people biying a buisness. That happens alot.
Because it's a bunch of rich people buying business on other worlds that could drastically increase their power over not only their own world, but also other ones.
In my experience the Inquisition took a very dumb view of people with that kind of power and no it doesn't.
world branches pretty aggresively.
That is actually another problem I have with it, extra planetary businesses are very hard to pull off in 40K for humans at least.
Banking it might be doable, but on another world?
They'd get kicked out, no world wants their banking to be done by someone else.
And that's another thing the Trust bank is less of a bank and more the Trust's funding, it's based on Midgard, but it doesn't actually handle much actual banking near as I can tell, it doesn't invest in things or holds peoples money with interest, it just gives out funding for stuff ect.
As for midgardian regulators...idk. Midgard has a strong focus on naking guns and tanks (summary wise) but there also have skilled workforce of billions of people which means kower level crafting of special parts for vehicles or wvery day items could be a strong suit in the Midgardian economy.
That was before the standard of living shot through the roof.
Military is a big thing, but Midgard is the capital of the Trust with over 200 billion in population and the largest amount of Thrones in revenue and produce the most material in the Trust if they don't have some damn good regulation I'm a rats ass.
They also have some pretty damn good skills (environmental project and all that)
Try and imagine J.P Morgan telling his son "kay sonny go and make me proud. Heres the familly buisness and some friends. Good luck. I gotta go fix the tac system ta ta~" and then boom.
Who the **** is J.P Morgan.
And if that was what he was saying I'd say stop ****ing up our military ya douche.
I'll edit this later.