I get that parts of NYC have been affordable at different times, but there are parts that get gentrified and taken advantage of by a very specific class of people (primarily white middle class) who use the depressed value of the area to have more space and time to do arts and culture stuff.
I lived in Sunset Park for many many years and saw artists moving into the studios down by the docks. They came from SOHO, DUMBO, and Williamsburg. In 25 years, they will move somewhere else.