At the risk of stating the obvious, I want to add a quote that I found very informative

> If you're given the choice between a low bandwidth private connection, or a small share of a larger bandwidth connection, take the small share.

From http://www.stuartcheshire.org/rants/latency.html

You are not being serious right? That article is discussing the realities of 90s internet

Almost every network uses Statistical Multiplexing.

https://en.wikipedia.org/wiki/Statistical_time-division_mult...

Theoretically, yes. Practically, the fact that no coaxial cable internet prominently advertises upload bandwidth leads me to believe there is far less upload bandwidth available than fiber networks.

oversubscription ratios for consumer isp's are typically in the hundreds.

and mostly that is fine because wifi is also involved which will domniate any availability or service quality metrics.