Well, I can say that some of it comes from the fact that a group traditionally out of power (women) have been the ones who've been able to sell their bodies. But, speaking to your larger point, I agree - it's amazing to me that people will not even question (much) selling out their very selves, but cry "Ick! Unclean!" at something trivial like a sexualized encounter, in the US.
If their online "profits" are any indicator, we'll see where the rest of their profits go as we all slip further and further into cloud computing. The rise in popularity of Mac OS and other alternate platforms make the "switch" pretty easy these days.
You can totally have background tasks. It's just that they have to come from Apple.
That's why it's a deal breaker for some people (like me). Apple's apps don't always suit everyone's needs. There are other apps that are useful that people want to run in the background. Pandora and Last.fm are two examples. I don't even listen to MP3 files anymore since I am a subscriber to both of those music sites.
Morals do not pay the bills. As an individual would you (not the parent) be happy to content to contribute half your income for the rest of your life if it meant China was truly free and democratic? I doubt many would.
Some people realize there are more important things in this world than money.
That's why basically 100% of content is moving to flash where they can control your experience.