It survives in part because the neighbor across the street is the Metropolitan Correctional Center [1] (an architectural masterpiece that was ruined by painting it about 10 years ago). The other reason it survives is that many buildings are owned in full by people that just aren’t interested in huge piles of money. When they pass away, their children will surely cash out and another skyscraper will rise.
There are quite a few hole-in-the-wall lunch places along this block. My favorite was a fried chicken place with some homemade (?) hot sauce. Around the corner is a fantastic old-school pizza place and I think the guy who runs it owns most of the buildings.
[1] https://www.bop.gov/locations/institutions/ccc/index.jsp