Similar problems occur with the electric grid or water etc, but the thing is as long as there is excess capacity 24/7 you can’t tell the difference. Unlike money you can’t bank unused bandwidth.

The reality of 1Gbps networks is people have trouble saturating the line for very long. Even 5 different 4K streams is not hitting anywhere close to that.

Being able to download a 20GB file quickly is the benefit, even if you don’t download many of those per month.