We overestimate how old history is here. There is a case to be made about how we've enjoyed exponential growth in cosumer technology over the last few decades but that could slow down on a few fronts. For ex- display resolution has reached "good enough" fidelity for a while.
I certainly hope you're right and we find cool, novel use cases but I wouldn't be certain. I personally have not thought about bandwidth for a few years now. Meanwhile I remember the speed bumps being exciting earlier. Diminishing utility is real.