I have no opinion on his comments about the iPhone. But I think he's wrong about the iPod. He says:
"The iPod has sort of lived a long life at number one. Things like that, if you look back to transistor radios and Walkmans, kind of die out after a while, " he said.
"It's kind of like everyone has got one or two or three. You get to a point when they are on display everywhere, they get real cheap and they are not selling as much."
He's basically channeling Yogi Berra, who once said of a popular restaurant, "No one goes there any more. It's too crowded."
He points two popular products, the transistor radio and the Walkman, and said they both died. But he neglects to mention why they died--they were replaced by new technology. The transistor radio was replaced by the Walkman. The Walkman was replaced by the portable CD player. The portable CD player was replaced by the MP3 player. The iPod is currently the #1 MP3 player. Until a new technology comes out, there's no real reason for it to become less popular.