I think there are actually two art scenes. The pre-gentrified art scene and the post-gentrified art scene. The post-gentrified scene almost always completely supplants the pre-gentrified scene. Leaving only scattered remnants of what came before and sometimes leaving no trace at all.
An example of this can be seen in NYC, particularly in the gentrification of Brooklyn.
There’s this wannabe poetry Banksy artist that graffiti’s their handle with a corny, cheesy “deep” sentence all around NYC. These corny one-liners of his shows in galleries too. It feels so commercialized. Whenever I see them, I know this area has completed gentrification.