Dense residential area tend to have the full range of services, more interesting restaurants and bars, more fun, more interesting. If people are spending more of their day there, I would expect a flourishing of these kinds of business. At the end of the day, some storefront owners will need to move to other areas to take advantage of changes in demand.

Cities are very dynamic things. They are constantly changing and renewing themselves. Neighborhoods come up and go down. There is no stopping it.