I don't understand why tablets haven't grown. Here we are 5 years after the release of the original ipad, and they're still mostly 10" or smaller. With phones n

I don't understand why tablets haven't grown. Here we are 5 years after the release of the original ipad, and they're still mostly 10" or smaller. With phones now encroaching on tablet screen sizes, I think it's time for someone to trot out and ultra-thin/light 14" or 15" tablet. Sure, it sounds crazy, but then so did a phone with a 5" screen when the original Note came out. For tablets to really take off, I think they need to define a category that sets them apart from phones - and to me, that means bigger screens, real multitasking, and increased potential for productivity. Everybody says that tablets are going to destroy the laptop market. That may be the case, but first I think that they need to be able to actually function as decent laptops replacements. So there are both hardware (screen size, input, thickness, and weight) and software problems to crack. That being said, I think that the case for a tablet over a laptop of similar size/weight is a pretty tough sell, and long-term, convertibles will reign supreme ... and so, my final conclusion from this is that even though I rather dislike the 'tablet' interface baked into Windows 8, once the appropriate hardware exists to support it, I think that Microsoft's concept of a convertible OS is actually a pretty solid one ... although I firmly believe that the UI for 'desktop mode' cannot be the same as the UI for 'tablet mode', even though combining them seems to be Microsoft's ultimate goal. I think that a better goal would be an application framework that allows a single application to shift between modes, without losing state, without restarting. I am looking forward to the day that somebody solves both the hardware and software problems in a single machine.