In response to the transfer of Bandcamp to a new owner and mass layoffs, a developer has already built a simple alternative for musicians.
There's a really cool open source alternative to Bandcamp that just came out. With some questions raised about Bandcamp's future, some musicians in the Fediverse are leaning into the new platform as a different approach to selling their music.
Faircamp is just a static site, and doesn't federate itself, but its adoption within the Fediverse suggests that people are at least thinking about alternative solutions.
Epic sold Bandcamp a few weeks ago and the new owners instantly laid off a large part of the staff. It's fair to say that Bandcamps future is uncertain.