It's the prerogative of a performer to ask someone to stop taping their set. But I'm not buying the whole "you're taking food out of the mouths of children" arg

It's the prerogative of a performer to ask someone to stop taping their set. But I'm not buying the whole "you're taking food out of the mouths of children" argument. Give me a break. There's no way to gauge how many people don't buy an album or DVD because they already saw leaked footage online. There's no way to prove those people would have bought the product if the material hadn't been leaked. On the other hand, if enough people do buy the product, then who cares how many don't, for whatever reason? You've made your money. You win. Be happy.