How exactly you manage the company that owns the last mile infrastructure can greatly affect how well this works, but even in the UK which has done this quite poorly, there are pretty much no place where you can't pick from dozens of ISPs.
It still imposes limits as to the maximum capacity, based on the upgrade schedules of OpenReach (BT) which controls the phone/adsl network. There are some problems. E.g. due to the way regulation is structured in the UK, BT frequently gets accused of milking OpenReach for money rather than invest in upgrades at the pace they ought to (basically because they earn far more from OpenReach than from their own ISP). One solution to this type of problem would be to regulate dividends from the line operator so that there is a limit set based on the amount invested in upgrades to make it pay to reinvest and/or to allow them a higher profit margin on upgraded services for a period.
OpenReach's wholesale prices are regulated roughly based on a cost+ basis, and are open and published on their websites for everyone to read.
Overall it does mean the ISP market is quite competitive, and entry costs for new ISPs are guaranteed to be relatively low, as e.g. there are "backhaul" services available that allow an ISP to get a connection to one or a few points in BTs network and have them hand over IP connections to subscribers at that point rather than having to do local loop unbundling across the country.
Yes.
LA 2015 Election:
https://ballotpedia.org/Paul_Krekorian
AT&T - $14,400 Verizon - $7,753
2 of his top 5 contributors were the local ISPs.
Unfortunately there aren't any good data sources that provide country-wide coverage of this information but I'd be willing to bet its a very common practice.
I'm curious, if you believe bribery works at the national level as well as the local level, how do regulations that are pro-consumer get passed?
In practice, I've found that the reason it works locally is almost no one is involved in local elections besides corporate sponsors. We literally had 10% turnout in my city, for instance.
Similarly, loop unbundling and other competition increasing regulation are almost always passed at the national level in basically every country that has such.
Hint: There isn't a rebuttal you can make because if it is true, then your argument is false. If it is false, it is an admission that federal regulations do actually function to increase competition to the benefit of consumers. There isn't a third option.
You don't seem to acknowledge the existence of private sector collusion either.
Suggestion: don't use circular logic when debating.
I acknowledge private sector collusion, and the answer is more competition. More regulation (usually influenced by the existing players) harms market entry. You need to constantly update the X & Y regulations so that start-ups have a fighting chance. That's painfully slow right now.
You are over simplifying it.
The regulation is being done at the wrong level of government and is entirely the wrong regulation at the local & state levels.