Games made before I was born whose copyright won't expire until long after I'm dead. They ought to be public domain by now. In fact, games should have a shorter copyright term since they're harder to preserve and less valuable over time. I still have a box legally-purchased of Zork games (CDROM editions) and manuals and a copy of Planetfall here, but should I feel any shame about pirating them? I don't think I should…
All copyright is way too long but authors go completely off-piste at anyone who suggests that it should be something more reasonable (I kinda like 21 years myself). Part of the issue is that the loudest voices are that 0.01% of authors whose work still has some commercial value decades after its creation.
I could imagine an argument for harmonising the duration with patents for even more simplicity.
Another interesting consequence is a lot of GPL code would become public domain. I haven’t really thought about that before.