...But there's a reason tablets haven't caught on to date.

It's because you can't work on a tablet. You can't get things done without a decent working keyboard, whether it's in the enterprise or for personal productivity. Normal people are never going to lug around a separate keyboard for their computer. The two most highly anticipated products, Arrington's CrunchPad and the Apple tablet, are both going to be secondary entertainment machines, not the mainstream tech trend of the year.