Ive seen that pixelfed and peertube have the ability to add a licence to content. I think this would be great for everyone so we can get ahead of threads and have collective bargaining power when they inevitable put our content between ads.
Heres the pixelfed duscyssion on the issue: https://github.com/pixelfed/pixelfed/issues/13 Here is mastadons discussion: https://github.com/mastodon/mastodon/issues/20079
Im not sure if lemmy has a discussion yet i may create one later if one doesnt already exist.
Then a good solution would be a license that specifically disallows any entity that works with/for Meta to use your content for advertising.