That further centralizes, makes matter worse.

Government is also extremely inefficient. To build the service it'll cost them 10x more than private companies doing it. How much do you want to pay in taxes? There will come a point that even if the government actually is trying, that even if the entire GDP is converted the taxes that it'll still end up with a worse quality of life for the rest of us. Governments is easily corrupt and extremely inefficient. Its almost never the answer.