I've found that most of the mass populous doesn't care about implications of anything (which of course includes gamers). If a person can play something but they'll have to give up their first-born down the road, they'll hit the "yes, I agree to the terms" faster than a rattlesnake strike. Long-term thinking/principles are often traded for short-term priorities/"Have it now".

To answer the original question:Not enough to not buy a game they want to p lay because it has DRM.