To buy modern art you must have wallet openness.
I remember a long time ago when I first moved to NYC back in the late 70's, there was a couple who collected modern art. They were school teachers if I recall correctly.
Lived in a tiny apartment but had an incredibly valuable collection. Bought it all from artists who became well-respected but assembled their collection when they artists were unknown.
You might remember that story.
I think youre getting closer.
Modern art is mostly a way to launder money.