As the COO, Cook did great job lining up and executing the production line. Most of the creative work should already be in the pipeline for the 2012, 2013 releases. We'll see what happens after then.
From Jobs' own mouth, it was his idea for the iPad a decade ago and from that sprung the iPhone.
What new markets have they created?
Now, don't get me wrong... I love Apple. I have a Mac and an iPhone and Cinema displays. I'm jealous of my friends with iPads. Etc. I just don't see any brand new markets.
And how is this not creating new markets? I think you are confusing markets with ideas. IBM wasn't the first to come up with the idea of the computer, but it certainly created new markets for it. Absent actually producing the product that is sold in the market, an idea (or a poorly implemented version of it) isn't much good.
Danger's Sidekick line was popular with those less enterprisey demographics and predated the iPhone by quite a while.
Most everyone else didn't either a few years ago. Then came iPod, iTunes Music Store, iPhone, iPad. It all seems kinda obvious now, but nobody else did it. That's vision and leadership, and the world needs more of it.