I think it's really weird that Marvel movies became the go-to poster for shady film industry practices when a lot of shit Marvel pulls is pretty industry standard. The entire industry is built on rotten foundations, which is why there's a big strike happening that you may have heard about.
Like, Marvel Studios are a horrific den of abuse, but they're not uniquely terrible, and the fixation on Marvel feels like a reaction against how popular The Avengers was with teenage girls on tumblr from like 2011-2018. It went from the fandom on tumblr, to being the go-to thing people fixated on when they make those annoying "watch another movie" posts. There are so many more studios making movies exactly like Marvel does.
Marvel Studios could go under tonight and there would still be an entire industry of shitheads who want full freedom to abuse entertainment workers. It's not a "Marvel movie" issue, it's an industry issue.