They have physical locations and extant real estate across the entire US.

So, rather than continuing to give billions to private ISPs that do literally nothing with that money, and who double-down to curtail services whenever mildly inconvenient, my suggestion is that we (ie US Government) does not provide a single additional dollar in funding or subsidies, and instead invests that money in building itself a USG internet UTILITY. If necessary, clawback the billions that have gone to Comcast, ATT, Verizon et al, or just seize their networks and charge their executives with RICO and fraud. They essentially operate as a cartel anyway.