I'm not sold on the argument that customers even desire the ability to produce long-form text content on a touch-based device, or that it's ergonomic to do so. Touch-screens are great for reading and basic editing, but beyond that I'm skeptical; the line-of-thought that leads to "word processing... on a tablet!" seems haphazard and reactionary.

Additionally, I'm reminded of the old Dvorak-vs-Qwerty keyboard layout wars that would occasionally flare up on Slashdot. Eventually, most people realized that it was a neat idea that wasn't practical and moved on. I think that's where this is going.