I think the appeal is that people intuitively understand that computers having a physical form at all is not required - that ultimately, computational ability w

I think the appeal is that people intuitively understand that computers having a physical form at all is not required - that ultimately, computational ability will be integrated into the essence of every object, and lugging around a stupid, immediately-obsolescent device represents the failures and limitations of current technology more than the potential of computation. That's why they spend extra money on smaller computers, because they represent the next step towards the ultimate elimination of physical computers, which is what people want.