I'd say that's pretty much the same in any city. The corporations move out because they can't take the crime load and small bodega-like stores open to fill the vacuum.
The concept of service deserts in major urban areas crops up for all kinds of services -- health, food, and financial.
Back in the mid- to late-1990s local politicians started touting one of the service deserts in Washington, DC, as a financial black hole. The only financial services available to many residents were check cashing stores, which were very expensive. So, the politicos started spouting all of the standard tropes about how the big financial corps were keeping those in the area in poverty blah blah blah.
Finally they managed to find a company (for some reason I'm thinking it was either Bank of America, but I may be wrong about that, it's been 30 years) to open a local branch to serve the residents of the service desert.
Two things happened... despite lots of publicity, relatively few residents opened accounts with the bank because many of them were recent immigrants who were either in the country illegally, and thus couldn't jump through all of the hoops, or they didn't trust banks because of experiences in their home countries.
The other thing that happened?
The spiffy new branch was hit with something like 4 armed robberies in the first 6 months it was open.
It wasn't open much longer after that.
