If the autogenerated art becomes too close to copyrighted art, then you'll have humans suing AI generators.

George Harrison's My Sweet Lord is very similar to He's So Fine by the Chiffons. And that was an easy case. But some cases in requires deeper analysis, such as Lana Del Ray's Get Free.

In January 2018, singer Lana Del Rey claimed that Radiohead were suing her because of alleged similarities between their 1992 debut single Creep, and her song Get Free, from her 2017 album Lust for Life. The band's publishers Warner/Chappell subsequently denied taking legal action, but did confirm requesting credit for “all writers” of Creep.

The Guardian spoke to a professional composer to analyse the songs, who noted that the chords used are rare in pop music, and the melodies bear an uncanny resemblance, although in conclusion “imagined the similarities are unintentional”.

https://www.bbc.com/culture/article/20190605-nine-most-notorious-copyright-cases-in-music-history

If AI is sampling, then how do you defend it being unintentional? While all Radiohead sought was credit on the writing (in this case), would humans (whose livelihood is being threatened) be so generous with an AI composition? And if the music industry is threatened by AI, they will lawyer up.