Ok, but the goal is not to make sure that artists can derive every possible revenue but only to make sure that they get enough to for the creation to be worth it.
Given the nature of the cultural market (authors/original creation often gets a very small share of what the end consumer pays, unless they are also their own editors, producers and distributors), it’s hard to make it worth it without extending in time (and part of the idea is that some of the value you didn’t get while you’re living will get to your legacy, which is a deep motivation too).
