[thefurdrake]

Theorycrafting here, but wine and proton will make it pretty easy to decouple Steam platform DRM.

It should be noted that it's perfectly possible to release your game on steam in a way where the steam client doesn't even need to be running in order to launch the game. The choice to tie Steam's service into the ability to run the software you purchase /seems/ to be a decision made entirely by the people publishing their games.

If that's the case, you should really be more concerned about that behavior rather than Steam's DRM existing. Don't buy games whose behaviors you disagree with!