BG3 is actually a perfect counterexample here. It doesn't have DRM, doesn't require an online account to play and uses direct connections for multiplayer. Nothing needs to be done to preserve it.
>and all the same people would have bought it for all the same reasons.
you have to be trolling, right?
if people can get the game for free, because freedom 2 demands the game be freely redistributable by anyone with no restrictions, people are not going to pay for it. they are going to get it for free.
This is not true in practise. In practise people can get the software for free no matter what the license is. And in practise people click the "buy on steam" or "buy on Google play" button and you still make money.