Why not, the cities are going to have the most of the economic power any way and you still need farming to feed those cities. And besides it won't really turn into a tippyverse unless we want it to, so its entirely in our control, we can put arbitrary limits on the circles if we are worried about them, or charge higher prices than shipping to keep traders relevant.
I don't see the problem here anyway.
Cities having the economic power isn't the issue, it's that trade is a major component of how settlements support themselves. Plenty of major cities today only exist for trading reasons, and in a world with teleport circle they'd starve to death.
Depending on how quickly people caught on, you could see almost every trade dependent settlement in the region collapse like one of those coal towns where the mine is played out. Not everyone could afford to leave either, so that a whole boatload of desperate people to deal with.
We could tie them down in red tape, but that's a patch at best. The pressure to change it would be significant as people got used to how cheap and easy it makes everything.
Pretty much every government that thinks it can completely and perfectly control its economy has exploded at least once. That isn't to say that you can't regulate it at all, but assuming you can do whatever you like and predict every possible consequence is a mistake.
Frankly, I don't like that cargo hold expansion for cheesiness reasons. That's stupidly overpowered for a flat cost.
Also, I don't see public transportation as a problem at all. A bicycle would be far more useful to address the few existing concerns then plots to build stuff worth millions of dollars in compared buying power.
Fair enough on the Captain's Locker, I do think we could modify it to be useful without being broken, but its not like we aren't making money hand over fist without it.
On the transport end, bikes only solve the problem now while the cities are relatively small. Planning this kind of thing in advance is pretty important to making major cities easy to navigate and live in. The earlier any given city in reality started planning for mass movement of people the better off it tends to be.
It's not even close to our biggest issue at the moment, but it's still fun to try to solve and needs to be addressed eventually. I'm fine with using trains or whatever, I was just exploring an interesting alternative.