The thread title is related to the assumptin that damage of piracy is the apparent loss of sales, and that less piracy=more sales.
Is that really the case? Or at least is it the case anymore?
That likely means that those who still pirate wouldn't pay for a game no matter what.
To those people, you are not going to get sales if you stop them from pirating a game. They won't suddenly start paying money for it if they weren't going to when they could pirate it.
Almost half your post seem to focus on the nebulous 'those people' and the pointlessness of preventing piracy because you believe the statement less piracy=more sale is false.
Unless I'm reading this wrong? Please elaborate, because I actually agree with the centiment you express in the later half of the post, I just feel that those people WILL buy games if you stop them from pirating, because the alternative is to go without and I do not believe they can go without.