https://arstechnica.com/tech-policy/2019/09/50-of-us-homes-still-wont-have-fiber-broadband-by-2025-study-says/

Fiber broadband is now available to more than 30% of households across the US, and fiber networks should reach 50% of homes by 2025, a new study says.

But 50% coverage would, obviously, leave another 50% of homes without access to the fastest wireline broadband technology. Reaching 80% of homes instead of just 50% would require an additional cash infusion of $52 billion over the next 10 years, the study says. Going from 80% to 90% would then require another $18 billion. Going from 90% to 100% would be far more cost-prohibitive because it would require wiring up the least populated parts of the country, which make up "the vast majority of US land," the study said.