More citizens mean more cost for the state, aka the thing taxes are supposedly collected for. Amateur here, so I might just missed it, but where did you account

More citizens mean more cost for the state, aka the thing taxes are supposedly collected for. Amateur here, so I might just missed it, but where did you account for those marginal cost? I have a hard time believing original residents actually benefit that greatly from those deals as well. Yes there are benefits of getting more people and well paying jobs into the region and some competition to keep taxes reasonable seem fine. But to me this still mostly seems like a transfer of wealth and power to big cooperation, boosting societal problems we already have a hard time dealing with.