Where do ISPs at the top of the food chain come from?

Question

Computer networks

Where do the most important Internet providers come from? From a satellite or does it work somehow differently?

Answer 1

https://ru.wikipedia.org/wiki/%D0%A0%D1%83%D0%BD%D... Still from the 80-90s.

Answer 2

They do not take it, they generate it from you and us.

Answer 3

Out of nowhere, top tier 1 providers have long agreed to exchange traffic for free and only sell it to downstream providers.