We do have data on these things, we know how the market breaks down. For the record, the experience for tablet devices is way less crippled than you may remember if you haven't used one in a while. The tablet my parents use has a very nice detachable keyboard and a dedicated desktop mode. For web applications there isn't much difference from using a laptop, and they do appreciate the ability to use it as a screen with no keyboard for media consumption.

I have tried to get Linux running on a few PC hybrids and tablets, but most of them are a bit too quirky, and even the ones with some attempt at dedicated support from the community are a bit of a hassle, unfortunately.