Thats kind of the catch 22.
If you dont enforce your copyright... someone can use that against you. I could sell baby yodas in walmart, and if they bring me to court... I could say they didnt enforce the 1000 etsy users who are selling it, so they must not have a problem with it - If you dont actively protect your IP, it's worthless - It's a shitty system we have.
If you search etsy...theres 211+ Pages of baby yoda stuff. I don't see why disney doesn't drop a few hundred cease and desist letters... Their lawyers are on retainer, so it doesnt really cost them much. Which is why I think some publicity is good publicity, and if they did do that...they'd likely be seen as bullying the smaller guy. So they pick and choose their battles, go after the bigger fish - the companies producing these things (Print shops who have something to lose) Not the guy printing stickers on a desktop printer and hand cutting them out. It's not so much that theyre not against copyright law, more so that they'd spend an eternity trying to stop it from happening, and again come out looking like a bad guy.
online movies are another thing to look at - You're the type who'd be around watching the news when the pirate bay just started getting take downs, so you'd remember this! The movie studios sued them in their country and demanded they take down their site...so they did, and put it back up on a different subdomain that had less strict piracy rules. A year of court later...same thing happened. Switched again to another country...a year later....same thing. They were playing wack a mole - Every country has its own rules, surprisingly the USA's rules for domain takedowns are the least strict, and they still have their .org domain... but either way. Companies can fight in court for years and years over a single case - going after every tattoo parlor in every city, in every state... Not even disney has that kind of cash. And even if they did, half of those parlors would be back up and running with a different name in 6 months doing the same thing.