but after copyright expiration
I’m not at all convinced this is ever going to happen, and currently have no reason to believe it ever will.
While I agree copyright extensions are already to ludicrous levels and may get worse, never is a very long time. It’s just my opinion, but I think they’ll give up before they hit 10,000 years. Also, the fact that copyright terms are codified into so many multilateral trade agreements actually makes further extensions a lot more complicated than they were only a decade or so ago. Not impossible, but certainly more expensive.
Unfortunately, at that point no-one cares. The film is owned by the one company that’s notoriously one of the reasons of updating the whole copyright law and already none of their films have been made to public domain. With limitless money you can change the laws.
By “before 10,000 years” I suppose I should have specified that I’m predicting considerably less than 10,000 years, but you know the Internet and sarcasm tags. I think they’re standardized at around lifetime+90 now, I’d say lifetime+120 is the limit before ludicrous turns untenable, at least on a global scale (all it takes is one country holding out and the whole extension house of cards collapses, with global trade and the Internet making imports not the hurdle they used to be). And at lifetime+120, there will be plenty of Star Wars fans still in existence. We won’t all have evolved into Eloi yet. I, however, will have evolved into mulch – I’ll grant that much.