That's fine for people who are dead, but I find it hard to give money to people like that who are still alive.
Stephen Collins would get no money from a book about Will Decker.
That's why I've never paid to see a Woody Allen movie, and I haven't paid for a Roman Polansky movie since I found out what he did. I just don't like the idea of supporting them.
I think that's a bad thing to do, because no movie is the work of just one person. There are hundreds of people who work on any given movie and earn income from its sale and rental, and it's unfair to penalize all of them just because you object to one of their colleagues. It's one thing to do that with a novel, because the author is the primary beneficiary of that (though the publisher would get a cut too). But for a movie, that's hurting a lot of innocent people to penalize just one.