The rightsholders still have to be proactive about marketing to maintain the popularity of the work and hire lawyers for enforcement. There's a lot of copyright

The rightsholders still have to be proactive about marketing to maintain the popularity of the work and hire lawyers for enforcement. There's a lot of copyrighted work from the late 20th century on YouTube where apparently nobody is doing the work on either front because the videos have been up for years and have like 900 views. But I guess if something suddenly became a cult hit, it could be worthwhile to sue whoever instigated/profited from it. Unfortunately the rightsholders tend to be publishing companies, not the kids, so the kids would still only get pennies on the dollar in royalties, if that. And technology is gradually making it easier for publishers to enforce their "rights" on even the stupidest, least popular works.