Yes, you are right. But.

People do abuse the protections, which are too lengthy, makes possible to sell rights, etc.

In the end, corporations (ab)uses (buy and sell rights) protections for amassing fortunes much bigger than the original creator ever got. That's not right, not fair, at all. System's broken, need fix, throw it all out and build something new, centered around creators.

Give back to creators only, for less time.