Let me fix that;

People in rural areas can have problems getting service because there has not been ~~enough~~ proper government subsidy to deploy infrastructure.

I mean if the feds just toss money at these providers they'll use it how they please. It should be a matter of government doing what it is necessary to deploy service as widely as possible. Without oversight it's just giving them free money.

I suppose now that the cell network is able to provide "hotspot" service that could be an out for subsidy, but it sure won't make a 100Mbps standard. On 4G the best my phone can do is 50Mbps when close to a tower, less when signal strength is lower. You can get much higher speeds on 5G, but it's even more affected by tower distance. You're not going to get that in a rural area, same infrastructure problem.