Do these vendors ever do surveys?
I'm not talking about the "how was the support you just received" survey. I'm talking about, "ok, here we've got a basic tablet. Let's ask industries X, Y and Z if they plan on using tablets for anything, and what would they like to see built into the tablet that would really be helpful to them."
One thing I've noticed is that vendors "think" people will buy this tablet or that tablet design, sometimes based on "expert opinion/projections" (usually very broad, like in this article re: Windows use), sometimes based on who knows what. Whatever happened to ASKING the potential customers what they need & delivering that? Take the guesswork out of it!
The Dish network example seems to illustrate this. The techs are complaining about not being able to read the screens in daylight, etc. Had this field been surveyed by any vendor, this could have been identified in advance and they could manufacture a (ph/t)ablet ideally suited to their working environment, maximizing return on investment. I'm sure there are other companies besides Dish that could use this same technology to their advantage. Lots of potential here.
Broaden the survey to other markets, and you start to get an idea of what common features are needed in every unit (obvious examples include email access, browser access) vs. some more specialized requirements (e.g., the ruggedized aluminum casing HP is offering in their 1000 series in this article would work well for outdoor/industrial environment use; not sure if the size is too bulky though - an idea for a pilot!)
I'm not Marketing. But I can take this from a consumer's point of view, who all too often is frustrated at not being able to find the right device because every option out there is unsuitable because they are missing one or another critical function.