Some of the utilization comparisons are interesting, but the article says 2 trillion was spent on laying fiber but that seems suspicious.
Giant telecoms bought big regional telecoms which came about from local telecoms merging and acquiring other local telecoms. A whole bunch of them were construction companies that rode the wave, put in resources to run dark fiber all over the place. Local energy companies and the like sometimes participated.
There were no standard ways of documenting runs, and it was beneficial to keep things relatively secret, since if you could provide fiber capabilities in a key region, but your competition was rolling out DSL and investing lots of money, you could pounce and make them waste resources, and so on. This led to enormous waste and fraud, and we're now on the outer edge of usability for most of the fiber that was laid - 29-30 years after it was run, most of it will never be used, or ever have been used.
The 90s and early 2000's were nuts.
At the local level, there is generally a cable provider with existing rights of way. To get a fiber provider, there’s 4 possible outcomes: universal service with subsidy (funded by direct subsidy), cherry-picked service (they install where convenient), universal service (capitalized by the telco) and “fuck you”, where they refuse to operate. (ie. Verizon in urban areas)
The private capitalized card was played out by cable operators in the 80s (they were innovators then, and AT&T was just broken up and in chaos). They have franchise agreements whose exclusivity was used as loan collateral.
Forget about San Diego, there are neighborhoods in Manhattan with the highest population density in the country where Verizon claims it’s unprofitable to operate.
I served on a city commission where the mayor and county were very interested in getting our city wired, especially as legacy telco services are on the way out and cable costs are escalating and will accelerate as the merger agreement that formed Spectrum expires. The idea was to capitalize last mile with public funds and create an authority that operated both the urban network and the rural broadband in the county funded by the Federal legislation. With the capital raised with grants and low cost bonding (public authority bonds are cheap and backed by revenue and other assets), it would raise a moderate amount of income in <10 years.
We had the ability to get the financing in place, but we would have needed legislation passed to get access to rights of way. Utilities have lots of ancient rights and laws that make disruption difficult. The politicians behind it turned over before that could be changed.
I stumbled on old maps that showed a complete coverage of fiber in my municipality, paperwork from a company that was acquired, and which in turn merged, then was bought out by one of the big 5 ISPs. When local officials requested information regarding existing fiber, this ISP refused and said any such information was proprietary. They later bid on and won contracts to run new fiber (parallel to existing lines which they owned, which still had more than a decade of service life left in them at that point).
I estimated that only around 10-15% of the funding went toward actual labor and materials, the remainder was pure profit. The local government considered it a major victory, money well spent.