WiMAX can do 5/1. 5/1 works for 99.9% of internet applications today, even streaming HD video. 10 Mbps is much harder to do over WiMAX (though still possible). 30 Mbps would require a dedicated WiMAX circuit. 5-10 up would also require pretty much dedicated WiMAX throughput.
Fiber in rural areas? Meh, no.
Not that I wouldn't like it, but we have to be realistic here. Companies aren't going to roll out fiber to rural areas, though if someone isn't served by copper phone and they want phone service it'd be a good idea
Makes sense. Though in rural areas where they only have analog cable, bandwidth is probably also freakishly expensive unless people actually use the internet in quantity...