It's not just homogeneity. Cab and car services basically didn't exist in many US cities prior to ride sharing. I'm a carless transit fanatic, but 10 years ago

It's not just homogeneity. Cab and car services basically didn't exist in many US cities prior to ride sharing. I'm a carless transit fanatic, but 10 years ago I'd probably have to buy a car to live comfortably in my current neighborhood.