Agreed, well the sad truth is that most of the entitled folks here in the US have no idea what the hell a marketshare difference is in other countries. Like I said before, the heavily pimped $80 device is most likely not available in other countries with less stable economies/very different marketshares. Think about it! If some software doesn't even have a marketshare, think Firefox in China, which is why it's no accident that most Chinese screenreaders happen to not have support for Firefox. If certain software doesn't get around in other countries, then you can bet your ass these cheap tablets spoken of may not get around to other countries either. Either way, I said it before and I'll say it again, not, everyone, is, comfortable, with, a, tablet! And why have a tablet when you can have it all in one? Screw the keyboard dock, that's just one more thing you have to carry and charge! Braille display? Subject to bluetooth connection fallouts. Alright, now that I'm done explaining it for the umpteenth time, let's get to a few honest questions.
Regarding Wine: Honestly wouldn't be so sure, sadly. I've heard Wine can be a pain in the ass on arm devices of which the mk speech unit would've been. The problem here has everything to do with the fact that windows apps are obviously compiled for the x86 architectures we're familiar with in the pc's. Rasbian Gnu/Linux doesn't contain its own x86 compatibility layer. There's one you can purchase called ExaGear Desktop, but the accessibility on that thing would be questionable at best, considering it's a simulated desktop environment, i.e a full-on subsystem. So unfortunately the short answer would be no.
2. External display-out? Absolutely, and there would be no extra peripherals needed as the Pi has an hdmi port already, and on top of that the 3.5mm output jack is a composite audio/analog video jack, so you folks still using rca tv's aren't entirely left in the dust. Lol! From what I understand this thing would've just ran a modified Rasbian with an added layer of software and obviously a custom skin.
Manuel, possible option for you. Not sure if this would entirely solve the problem of getting this into the hands of folks in developing countries depending on what becomes of this, but have you considered going the diy route? I.e, if you don't have the time to invest in manufacturing and selling the device, but you just about had the software complete, you could put assembly instructions up on the site plus an image. the problem is that probably wouldn't make you much money if people were independently selling diy-assembled notetakers, the software being entirely open-source. I guess it's an option among many. It seems to be the way some are going, I did see something that had a similar objective like the mk speech, i.e make a simple project that is easy to get your hands on provided you can assemble it or have someone else assemble it. It was the perky line of projects, perky pup, perky plank, perky pro. Basically the same idea software-wise, but different variants. One with a full-sized keyboard, one designed more like a desktop, one somewhat portable. It all involved the purchase of some low-level stuff to hold the thing together, about the highest profile item there was was the mechanical keyboard they suggested. By the way, I heard about this on the raspberry pi list, and it seemed like this guy had similar goals, even despite a different approach and a different target audience. Perhaps both software stacks, mk speech's and perky combined may make a pretty damn good collaborative effort, who knows what could come out of open source/diy.