Here is the thing: over many years/decades since cable and later high speed internet was introduced once company or another have basically had a monopoly in this area. No one wants to invest the money into building out another network in the city as much of the city is quite old and stringing up new infrastructure is expensive. Also some parts of the city can be low income so no company wants to invest somewhere that has competition and low income. Same for the rural parts of the county, people tend to be low income and even if not, spaced far apart making the economics hard for would be providers.
Since there is no economic forces that will drive the change to high speed internet access the area wants, they need to do it themselves.
As far as your lame "taxation w/o representation" statement: this isn't quite correct. The people paying taxes around America have voted representatives into congress in their local districts. Congress, made up of those repräsentatives, passed a bill which provides funding for infrastructure projects in various parts of the country from tax monies collected. Hence, taxation with representation.
You may disagree with the exact use, but this is how nations work. Some very small part of the money you pay towards federal taxes will very likely be used elsewhere in the nation to build a better nation. Later some small portion of the money I pay may very well be used to pay for something in your town. If you don't like that model, I suggest you find some other nation to call home, although I'm not sure where, as I suspect most nations work this way.