There is so much art that is creative commons and public domain I’m sure a worse ‘pile’ could be conjured up to start things out. Then just as we have seen with other architectures, as they refine, their need for data can drop and eventually we are back in the same place, maybe a few more years removed but back in the same place nonetheless. That is my take at least.
Personally, I don’t think it is likely that copyright laws will change to protect against algorithmic usage (too much precedent in more general reuse cases and for what is considered transformative). Having said that I also don’t think this will be the death of artists by any stretch, some industries will need to change or evolve but it will be just another tool in an artists belt IMO.