> Low bandwith, high latency connections need to be part of the regular testing of software.

One size does not fit all. It would be a waste of time and effort to architect (or redesign) an app just because a residual subset of potential users might find themselves on a boat in the middle of the Pacific.

Let's keep things in perspective: some projects even skip testing WebApps on more than one browser because they deem that wasteful and an unjustified expense, even though it's trivial to include them on a test matrix, and this is a UI-only.