I remember my first modem (early '90s, 300 bps, self-made circuit based on the MM74HC942 chip). I then upgraded to a 2400 bps V.42bis modem and was so happy about the speed improvement. My parents weren't though (phone line occupied for several hours/day).

A typical 200 Mbps FTTH connection is more than 80,000 times faster, and we're still complaining about the speed...

Which goes to show that any bandwidth will always get filled up. There will always be something to transfer that will saturate it.