Oh, it's very solvable. (As I pointed out.)

The bigger issue is naivety. A lot of these corner cases mean that it's unlikely someone can just put together a useful prototype in a weekend or two.

> if it was more profitable we would all be doing it.

More like, if there was more demand we would all be doing it. Most of us have reliable internet connections and don't go out of service often enough to really care about this kind of thing.