I don't agree about tactile feedback though. Trying to type with any kind of speed or accuracy on a touchscreen is a nightmare. I "downgraded" from a nice ergonomic keyboard to a clunky 1992 IBM Model M keyboard that has buckling spring key switches - and my typing speed and accuracy improved hugely. Using modern rubber dome keyboards is actually frustrating now.
So they're going to have to come up with some kind of tactile feedback IMO, whether it be buttons under the screen or some kind of piezoelectric device that makes each touch screen press feel like you're pushing a button (which is in play on some devices actually)
Interesting that you think typing is the way of the future.
I don't know what the future is going to bring. But I do know that:
a) things that are cute and unique and highly functional and widely extendable are profitable
b) wireless communication, both hi-speed (data) and low-speed (voice), is now ubiquitous and reliable
c) most of the day to day things that people do on computers can be done using web apps and network storage
d) most computer users cannot be trusted to check their own Outlook email without crashing a whole network
A wireless device, which is tightly regulated and remotely administered, is the future, at least for low-level office workers and students. Maybe like a netbook, but a touch device might also be useful for many apps.