Any big company. Anyone who I had promised my clients I could deliver them to, then changed their mind.
Really more my fault than Apple's, for promising something to my clients before I had a signed contract in my hand.
But the way they made it sound at that initial meeting, with the full pitch, immediate contract, and short timeline, made it sound like the contract was a small technicality.
I think you are far too forgiving. Jobs' language initially indicated Apple wanted all music in the store. Later he reversed his position entirely and seemingly spitefully. Apple does great things, but Jobs does have a reputation for expecting loyalty from companies they do business with. I suspect we'll see more moves from Apple like blocking Adobe's Flash to iPhone app tool (at least until presumably the FTC pressured them). That and a bunch of other great products.