Why does anime lend itself so easily to psychedelic abstraction?

I've seen an anime or two in my time, and something I noticed after watching Akira is how experimental many of them tend to be, especially in the sci-fi genre. It seems like Japan has a much higher tolerance for "art house" films than america, and I'm not quite sure why. I guess it's because America has a much more simplistic way of looking at film, that if the audience can't understand what's going on, the film is poorly structured. Of course, abstract animation has a place in American film discourse, but It's mostly relegated to low-budget art gilms, and most mainstream films use experimental techniques never come close to the level of Akira or evangelion.

I think it has something to do with whether the mainstream medium of film is live action or animation. Because if audiences are used to live action, any animation will be expected to operate like the real world. But, if they're used to animation, then they'll be okay with how unrealistic animation really is, and they'll be expecting their movies to push boundaries.

I could be wrong, though. I dunno.