Any increase in average utilization is an insignificant cost compared to the elephant in the room: Broadband speeds have been essentially stagnant for 10+ years if you look at tech development vs what gets deployed. The ISPs have been reaping the savings that faster backbone technology brings and not passing them on to customers, while failing to deploy improvements in last mile connectivity tech.

Actually the tech would have gotten better much faster if its development hadn't stalled due to low demand. If you plot a Moore's law type from the 90's, we should be getting 10 gigabits at home by now.