The FCC (USF?) funds (or a like amount) HAVE been expanding the networks, the trouble being it's a drop in the bucket compared to the real cost.
Recognize that MOST of that was dedicated to providing copper PHONE lines, the idea of making a "greater than 14.4Kbps" requirement is very recent under FCC decree.
The phone company can't help that 'WE" have been paying them to provide out of date technology.
If you NOW want to require they scrap copper and replace it all with fiber, be prepared for a HUGE frontend bill even if (in theory) maintainace costs will drop (in theory, only because when a tornado or some redneck decides it's fun to pull out 50 miles of fiber, duct, and knock down some poles, it gonna be another big bill for the rush repair)