The problem with almost every pro-piracy argument like this is that they fundamentally require a significant percentage of the population to disagree with it. "People who can pay will pay and I'm not taking anything from them" only works for as long as both the general population and retailers regard piracy as wrong and keep funding all those games, movies etc for you.
Heck, all you pirates should be upvoting anti-piracy posts like this, we're the ones keeping your habit funded...