Comment by dragonwriter

IIRC, of works that bring in any money to their creators, the vast majority is returned, for almost all works, in the first handful of years after creation. Sure. the big names you know have value longer, but those are a miniscule fraction of works.

Make copyright last for a fixed term of 25 years with optional 10-year renewals up to 95 years on an escalating fee schedule (say, $100k for the first decade and doubling every subsequent decade) and people—and studios—would have essentially the same incentive to create as they do now, and most works would get into the public domain far sooner.

Probably be fewer entirely lost works, as well, if you had firmer deposit requirements for works with extended copyrights (using the revenue from the extensions to fund preservation) with other works entering the public domain soon enough that they were less likely to be lost before that happened.