That's kind of what it is. 75 years after death for humans, 95 years for corporate owned works. I guess until they figure corporations are people and them a death + years deal, too.
Again, if works had to be registered, it wouldn't get so bad, because maybe those works that don't make the heirs money in the first 20 years could lapse. Those heirs who ARE making money will reasonably re-register. Whose who aren't, or simply don't exist obviously won't. Most works used to lapse that way, because people wheren't even making money and maybe didn't even know that Grampa had made a book, and so it fell through. I could stand it being the authors death + x years, if these lesser successful works AT LEAST lapsed.
Again, copyright is meant to temporarilly stop undue profiting during your lifetime. Not keep everyone from legaly drawing your character in a thong decades after your death. So maybe the Wiz might suck, and Frank Baum wouldn't have loved it, to say an example. Big deal. The will of a ghost is a lesser priority compared to freedom of expression and creativity.