Earlier quoted context omitted.
Apple doesn't create new product areas, it grabs an area and disrupts the status quo by offering significantly improved user experiences. In that pursuit they have really innovated in various areas, from UI design to manufacturing to logistics. The fact they haven't created a new product area by themselves doesn't mean they don't innovate at all.
I would argue the iPad is a new product area. Yes tablets had existed in the past but did any of them have scaled down, touch optimised UIs ? All I recall is full blown Windows which was probably the biggest reason they didn't succeed.
See e.g. http://www.linuxfordevices.com/c/a/Linux-For-Devices-Article...
It wasn't as sleek as the iPad, of course - battery, LCD and touch technology has come a long way, but it worked quite well.
And we were not first with a custom tablet UI (the article above compares it to the Ericsson Screen Phone for example: http://www.linuxfordevices.com/c/a/Linux-For-Devices-Article... )