My concern with the decline in the tablet market is that most of the "convertibles" I've seen don't have a 3G/4G/whatever radio. Those on the move (and needing connectivity) have to either find available wifi or resort to working on their their phone (or messing with setting up connectivity THROUGH their phone). I'm not taking a convertible anywhere there's not going to be wifi--and I'm certainly not going to try to be productive on my phone--so for me, that medium-sized 3G capable tablet fills a void (but apparently, the rest of the market doesn't agree with me
).