Because they didn't like it and it had a chilling effect on a lot of artistic careers. And so many people feel about current views. But in both cases, if you

Because they didn't like it and it had a chilling effect on a lot of artistic careers. And so many people feel about current views. But in both cases, if you are a bog-ordinary conservative or libertarian, it's hard to remain self-consistent and argue that private property and private contract are sacrosanct except when you don't like the outcomes.