>More than Android, I think Windows8 will be the big iPad tablet competitor.

My probability of that happening in the consumer space is fairly low unless Windows8 comes to be able to run snappily on tablets whose exterior does not get hot to the touch. (The exterior of the iPad never gets hot to the touch.) And my probability that MS (and Intel) will achieve that is fairly low because my probability is fairly low that MS and Intel (considered a single entity cooperating to expand into the consumer tablet market) will come to understand and take the "heat factor" sufficiently seriously.

But IMHO even if Windows8 tablets (as I expect) will get hot to the touch, Windows8 tablets will probably eventually succeed in mostly expelling the iPad from the enterprise (because employees have much less freedom to choose their hardware than consumers do and will tend much more strongly to put up with hot external surfaces).