I could see iRex making a try at the newspaper market, because it fits their interests (B2B), but I think their products are still far too expensive for any market that doesn't use the stylus as a critical feature. But iRex doesn't really support the stylus -- they barely got calibration, and that because the community did it. They still don't support pressure sensitivity, and they really need to look at some kind of handwriting recognition, even if it's something like Graffiti.
The professional market -- lawyers, doctors, business consultants, academics-- could be very strong for the iLiad, but iRex would have to vastly improve their software and their end-user support.
(Or find a partner interested in that market, I suppose.)