Comment by TeMPOraL

1) Sure, but while you can set conditions on my purchasing lemonade from you, you're not entitled to tell me what I can do with the lemonade after I buy it and walk away from the stand. Unfortunately, DRM does exactly that - it limits the ways I can consume products after I already paid all relevant parties for it.

3) I can be principled realist and accept DRM whenever it's convenient, and find ways to break it or alternate sources whenever I prefer it.