In fact, more bandwidth can have the deleterious effect of swamping people and of allowing machines at the periphery to be dumb. In effect, this is one bit transmitted through the ether that could require at least 100,000 bits to explain to a third person. At that compression ratio we could transmit more than ten channels of NTSC television over a 300-baud modem. There is a tendency to think of the trade-off between bandwidth and intelligence as merely a matter of computer cycles in the transceiver. But the transceiver should also contain knowledge of the signal.
Few people know how good copper twisted pair is.
It is absolutely true that fiber delivers thousands, in fact, millions of times more bandwidth. Frankly, we don't really know the limits of fiber. In addition, fiber now costs less than copper - when lines are updated, fiber will be used, with or without a need for bandwidth. Therefore, fiber will come into being automatically through the forces of common sense and Mother Nature. Dates like the year 2005 or 2010 are frequently heard estimates of when fiber will pervade the world, given appropriate investments and incentives.