Sources: The Verge, Bloomberg
quote: Apple had 1 big hit with the Ipod.
quote: ...the iPod was always the least successful product line Apple had...it was never objectively big for Apple in terms of revenue...
quote: Apple invents a lot
quote: Apple hasn't invented the underlying technology
quote: So they gave an Ipod Toutch a GSM chip and called it a Iphone. Later when sales started to slump a bit they made it bigger and called it an Ipad.