This looks like an interesting read https://www.eff.org/deeplinks/2019/10/why-fiber-vastly-superior-cable-and-5g
Major telecom carriers such as AT&T and Verizon have discontinued their fiber-to-the-home efforts, leaving most people facing expensive cable monopolies for the future. While much of the Internet infrastructure has already transitioned to fiber, a supermajority of households and businesses across the country still have slow and outdated connections.
Unfortunately, arguments by the U.S. telecommunications industry that 5G or currently existing DOCSIS cable infrastructure are more than up to the task of substituting for fiber have confused lawmakers, reporters, and regulators into believing we do not have a problem.
In response, EFF has recently completed extensive research into the currently existing options for last mile broadband and lays out what the objective technical facts demonstrate. By every measurement, fiber connections to homes and businesses are, by far, the superior choice for the 21st century. It is not even close.
As always this problem comes down to the simple issue of infrastructure investment, as we have seen with other industries and utilities theres an unwillingness to plow profits back into the utility as this may impact shareholder payouts.
You have to remember that far too many equity fund managers / corporate shareholders are fickle and selfish and will take the money they control elsewhere if they dont acheive a more than adequate return on any specific investment holding, so whilst its great for them personally as they get a percentage share of any" profit" the base customer is placed on a decling ramp of poor service and out of date infrastructure and no real way to influence such a short sighted policy.
There is no answer to this industry wide problem at this time as that would require folks to work for the common good rather than the bulging pocket books of a few.