Why not just force them to to build the common infrastructure and services, and in exchange they get to keep the money? e.g. Jeff Bezos has to build some subway stations in NYC or something.

That way you get somebody with a proven track record of building big projects who is also motivated by money, so the common infrastructure and services is handled competently.

Hm, wouldn't it be better to just have proper labour laws so that people are not worked to exhaustion in Amazon warehouses, for miserable pay?

Similarly properly regulate the gig economy.

And actually pay servers properly so that they don't have to rely on tips?

The today's life is enshittified by thousand cuts ... why not fix them?

All that is required is a legislative body that is not bought by big $$$.

> Why not just force them to to build the common infrastructure and services, and in exchange they get to keep the money?

Because it is undemocratic, ripe for corruption and abuse, will never work in practice (as the rich will inevitably find ways to game the system). What you are describing is basically just aristocracy, where the rich get to decide what is best for the rest of us.

Ah yes. Let's trust civic engineering to a man who ran a company that had front-line workers using piss bottles to keep up with quotas. This cannot possibly end badly.