Yep, local loop unbundling was a thing in the US, it was basically a provision in the 1996 Telecommunications Act to promote competition. It largely worked too, you used to have your choice of 10 or 12 DSL providers in the US. You could do that with things like copper local loops, I would love to see it with Cable but I suppose theres not a good way to share the local loops in cable plant as they are mostly fiber now. It too bad EEOC(ethernet over copper) never took off.
In looking them up, I stumbled on mailing lists for TPIAs hosted by Torix. Realised at that point that TPIAs have a lot in common with Canadian IXPs -- both put pressure on prices from Canadian ISPs, TIPAs by consumers and IXPs from businesses/services aghast at how much certain folks charge. See https://cira.ca/sites/default/files/cira-ixp-overview-web.pd... for more on IXPs. I wonder if there's a book on this somewhere, or what ISPs think. Rogers Cable peers with Torix, so it's not exclusively smaller players, in fact I'd say it's the everybody-but-telcos club but I'm sure telcos and US players are welcome if they cared to... (let's pretend they simply are unaware of the ahem, savings...)
