Earlier quoted context omitted.
Yep, I've been proposing a similar system literally for decades now in online discussions like this. If you dig through Slashdot posts from 20 years ago, you might find something from me saying something similar. It makes sense too: some things just aren't very profitable, and some are. If it's really worth it to the creator, they can pay for it. If they want to keep it locked up for 75 years, they better be prepared…
This could lead to a broader culture, because the most popular works would get long copyright protection terms, while the relatively unpopular ones would get short protection terms. People would be more likely to use those unpopular works and perhaps breathe new life into them. Eg imagine if this is how the system worked right now. You could have streamers watch unpopular (modern) movies with their audience. Or a you…
Why is this something that the government should promote?