Forget obscure, old is enough. Copyright should exist as a means of supporting creative works, not a way for large media corporations to sit on something in perpetuity and collect revenue with the only expense being 'investments' in congress to extend copyright.
I'm more than willing to pay for something new because that supports the production of creative works I like enough to give time and money to. Music, movies, books, video games, sure, I will and do buy them. But there's are many things out there that are several decades old and should have fallen into the public domain years ago, and for those I feel no such moral obligation. If the media companies want to avoid piracy, they've got options. I pay for Netflix, I pay for Amazon Prime, there's plenty of options for them to get a piece of the pie even with things that really should be free anyway. If they can't play nice and want to prove just how greedy they are, screw 'em.