Intellectual property is an odd thing in the first place. It's invisible to most people as they go throughout their daily lives. When it gets brought up to them, it's a unique concept to them and they usually don't like the idea of paying for it. If you knew that $5 of your iPhone went to a certain patent embedded in the iPhone, you probably would resent it. So just because it's being brought up here today, that's why people resent it.
The reason the iPhone will pay for the patent is because the law says they have to. The reason they won't give the music industy any part of their economic value chain is because the law says they don't have to.