There are other options, e.g. hosting somewhere where automatic anti-circumvention takedowns aren't a thing and the RIAA would have to go through a proper court process.
That is the case pretty much anywhere.
Is there? Just because someone claims (without court determining it) that some content is illegal doesn't make it so. So there would have to be some language in the law that the intermediary incurs liability due to mere allegations.
If record labels want to stop users from downloading their content, that's more than fine. It's a giant attack vector for such a small net benefit.
To support legal use-cases such as archival?