While these technologies can run on this power, they simply aren't consumerised, or even in the rear view mirror of non-HN types right now. You also have to con

While these technologies can run on this power, they simply aren't consumerised, or even in the rear view mirror of non-HN types right now. You also have to consider the use-cases: a smartphone or tablet can be used to author documents, browse the web etc (even if the experience isn't perfect), whereas a desktop computer cannot practically be carried in the pocket and used as a vital in-the-field communications device. As far as connectivity goes: again, you're talking about a hypothetical. While there's no reason you can't create a low-bandwidth experience on desktop, the fact remains that simply opening my email transfers over .5MB. Opening my Facebook account transfers more than 1MB. Doing this on my phone uses a fraction of this data.