Soduka: I think the best quote on this comes from an interview with a Sony executive right around the time Bioshock came out. I do not know where this article is now, but I can promise you it is real. An executive in the DRM branch of Sony is quoted as saying (The basic message anyway),
"It is important to understand that music industries have to be protected. There is no legitimate reason why the customer should be able to play their music on their PC and on their iPod, they should have to buy two copies, two licenses to do this."
It was the most laughable thing I've read from Sony. The basic message is they think you should have to pay for a song multiple times for each platform you have. That is, PC, Zune, iPod, CD, Sony says you need to buy that song 4 times.
'Course there's a legitmate reason, Sony. Your customers, that are the sole reason for your existence, want it.