Now hang on a second. I agree with everything you said right up until "Moral integrity is not given up by force, or by desperation. It is given up, freely. Those who don't defend their moral integrity deserve a porn star career. The desperate kind." With this, I respectfully disagree, and have two points to pose to you.
1. Making any kind of defense for oneself in any way takes a lot of bravery, tons of emotional energy and fortitude, and at least one fallback plan for when things go bad while defending oneself. Not everyone is brave, or strong, and people can easily be coerced into sacrificing their morals because they see no way around it. That is what abuse does, which I understand is endemic to the porn industry in particular, an abuser leaves the abused feeling like there is no bolthole.
Even not talking about porn, moral integrity is hard to maintain when you're on the verge of starving to death and so is one's kid and you'll buy food ANYWHERE so long as it's cheap, or if one is being constantly bombarded with ignorant, bigoted statements by the boss against a coworker but one doesn't speak out because they've only been there a week or so and you can't risk your job. One may hate themselves, shopping at Wal-Mart or getting some quick, hot food from McDonalds, or staying quiet when one's integrity demands that one speak up, but at the bottom of the heap one cannot see a way around it, and so makes the sacrifice out of fear.
2. No one deserves to be in that kind of desperate porn unless they actually want to be.