Your video game comment made me think: maybe the modern equivalent of the art scenario I mentioned is in commercial art like video games or movies, both of which still have genres and are often directly compared to each other – "Call of Duty is a better FPS than Medal of Honor," and so on.
It makes a lot more sense to consider Hollywood and video games as the proper successors to classical art, and to see contemporary art as only a small strand in the evolution of art.
Somehow someone managed to convince the world that Hollywood is not real art, but some other arbitrary weird stuff is.
(To avoid confusion, I personally love the arbitrary weird stuff.)
The world knows this is art but some bullshit artists, pun intended, in New York pretend like it is not. Then other bullshit artists in other cities follow what the bullshit artists in New York are doing because most aren't creative or free thinkers at all.
I love galleries personally but it is a class of non-creative, closed minded, bullshit artists at this point.
Also because those bullshit artists are aware the big money is in this bullshit world, so they give their best to get in and profit. You certainly don't get rich drawing for Bethesda, while in the art gallery business you maybe maybe maybe could.