The solution being to differentiate the core infrastructure provider from the services provider. i.e. force the company installing the infrastructure to hire it out at a fair price to all service providers

This is a good argument for dealing with such infrastructure as a regulated public utility.

That's true from the standpoint of you want everyone to have access to equally marginal service, but not the latest or greatest service. Instead, I think this is a good argument for removing regulations and stopping the cronyism that inhibits competition.

It's the internet, it drives innovation. Let's stifle it by making a bazillion rules that everyone needs to follow and pay to play. Let's make sure that like most utilities, change and improvements happen at the slowest possible pace, because I like T1 and isdn, ever since they rolled back net neutrality I been stuck on these dial up lines.. Plus, making it a utility, we can ensure that none of these 5G providers can enter the marketplace.. I guess it's cool for everyone to be a socialist now, count me all in..

Poles already carry the cables of both duopolies in areas that have them and fiber ducts have always carried multiple fiber providers - they are public rightaways. The cell tower infrastructure is also increasingly shared the last 10 years days as AMT and Crown and Castle own the towers and lease space on them to multiple providers. So monopolies are not really a feature in those things you mentioned.