I'd also say that wealthier people want to live in suburbs, because there they can have a whole house for themselves while also maintaining some closeness to th

I'd also say that wealthier people want to live in suburbs, because there they can have a whole house for themselves while also maintaining some closeness to the city center. Only poor people or not-yet-settled foreigners really live inside the city even though their costs might even be higher than paying off a house in the suburbs. And now if you're a service provider where would you focus your services? On the monoculture with money in the suburbs or on the poor and very differentiated city dwellers? The other way around the city centers are also better for startups because you haven't got the infrastructure to provide for a large, high-demand customer base yet, and prefer a niche. Multicultural hot pots are better sources of small niches with low requirements.