[tomnipotent]

> there's not a easy/inexpensive method for me to sign up and join the "bandwidth alliance"

Not unless you run a data center and intend to peer with other bandwidth providers to join your intranet to the internet. It's intended for large service providers like Cloudflare/Backblaze that do direct bandwidth interconnect at physical locations and don't have to involve other intermediaries (like Level 3) to move data between members.

Otherwise you "join" by hosting services/content with an Alliance member and making sure you only use other services that do the same. Even then, bandwidth isn't always free (Azure and GCP still have some costs, for example, but discounted).