'Good, reliable internet' probably means a range of different things to different people.
Tyler of goingslowly.com kept doing remote work while biking all over north america and europe, he talks about connectivity options here:
http://goingslowly.com/internet
The folks @ technomadia work from their bus while fulltiming around north america. From what I recall, their connectivity choices and costs imply it's lucrative work. And they've turned information on mobile internet into an income stream via a dedicated website, handbook, and even a subscription service...
http://www.rvmobileinternet.com/
If the employment pays enough, and the bandwidth demands are low enough, some of these mobile options could allow cheaper/more remote properties to work... Or, since food forests are so resilient, one could buy half a dozen remote properties from Arizona to Alaska, plant a food forest on each on, and move between them as the mood/season strikes!
If one was considering property which supposedly had good internet available, and that was critical... I'd insist on having it hooked up, to a laptop in an empty field if need be, and confirming functionality before closing on on the property. I've read a number of horror stories about dealing with the telecoms when you're at the edge of access and have no other options...