Nice strawman argument. However, if you go back and read my post you'll see that nowhere do I claim DRM is effective. Anybody who thinks DRM is effective is clueless, lying, or both.
Let's say that every time you bought something from the grocery store, the cashier punched you in the face. You keep going back because hey, the pain only lasts 15 seconds or so, and it heals on it's own, all you have to do is wait! Plus, you're getting crafty and sometimes you dodge the punch. Although, sometimes the cashier surprises you and kicks you in the stomach instead, what will they think of next? In this case, the violence is DRM and the store is Steam. Violence is a great analogy for DRM here as it is a net loss to everybody involved (well, except perhaps for masochists).
Personally, I don't like getting punched in the face, nor do I enjoy getting kicked in the stomach, so I won't shop there. Also, guess what, if nobody shops there for the same reason, they'll either change their policy on senseless violence or go out of business. Vote with your wallet.