MSFT's is open (encryption); they aren't trying to use it to corner the market on downloaded music.
MSFT's is open (playback); they aren't trying to use it to corner the market on portable music devices.
MSFT 2, Apple 0.
Oh... MSFT 3, Apple 0 because every iTunes customer I've ever met had no idea they couldn't move their music around. Way to go misleading your customers AGAIN, Apple. Remember when PPC was faster than x86? Holy cow, neither do I!!! But I'm sure Apple customers do.