With hundreds of thousands of semi-professional and amateur musicians competing on the Internet for their 15 minutes of fame, getting film or computer game score just isn't a real problem.

Besides, this is already doable, without neural networks. E.g. Karma[1]. The fact that most "AI music" enthusiasts don't know/care about such systems is a clear indicator that they aren't really interested in music or helping creators and just want to shove AI in yet another niche where it doesn't belong, then pat themselves on the back for contributing to "progress".

Further commodification of what's left of out popular culture isn't something anyone should be excited about. I just can't wait for the endless wave of trite "style blends" and the inevitable "oh, but all human music is garbage anyway" justification.

[1] https://www.karma-lab.com/

Edit:

Also, some people don't seem to be aware of it either, but there is already a full-fledged genre of generative music where artists use anything from analog circuits[2] to randomized or algorithmic sequencers/arpeggiators[3] to custom-built digital devices[4] for creating entire tracks. Of course, the point of generative music usually isn't to replace the artist, it's to shift their focus.

[2] https://www.youtube.com/watch?v=u8Hr4wBRbaY

[3] https://www.youtube.com/watch?v=7n6-4buAkts

[4] https://www.youtube.com/watch?v=0KdTIUlGULk