Seeing people with Bluetooth headphones was a rarity 10 years ago. They existed, yes, but so did smartphones before the iPhone. Some people had them, but the vast majority of the market of headphones or phones didn't care.

By personal media players, I'm talking about MP3 players and iPod-like devices. Essentially post-CD players. They existed, they weren't popular. Even the initial iPod took a while to gain a real market presence.

I'm not an Apple fanboy, but I can definitely acknowledge there were lots of markets which were largely ignored by the mass market until Apple made it cool and easy to use. I had a 3G phone which could do video calls when the iPhone came out, so I definitely understand that Apple isn't usually on the bleeding edge of technology, they're just the ones that often manage to refine it enough to be acceptable by the mass market.