Without a doubt, telecommunications is the true revolution of the nineties. I will boldly predict that one day, our bandwidth needs will be saturated. There is precedent for this. For most people in the industrialized world, their residential demands for electricity are saturated. We have a limited capacity to consume bandwidth, limited by our sensory capabilities, much like we have a limited capacity to consume electricity.
Compute power is different, for it is very easy to devise bigger problems to solve.
Odds are, a combination of wireless for mobile access, and fiber for fixed access. Fiber goes underappreciated. Today, we can pump 2.5 Gbps through a single strand, and that limit is more due to transistors than the fiber. With optical dense wave division multiplexing, we can get sixteen times that off the shelf. In the lab, the achieved limit is 3 terrabits per second down a single strand.