Wireless solutions have orders of magnitude less bandwidth than fiber, and you can run lots of fiber in a bundle, whereas there's limited spectrum and only one already-saturated RF environment going wireless.
Only in the past few months has Comcast (the only actual high-speed internet option in our fairly typical Silicon Valley suburban neighborhood of ~$2.5m average homes) deigned to offer upload speeds greater than the previous 35mbit cap...now we can push 200mbit for $120/mo (for 1.2tb monthly combined U+D, add $20 for "unlimited") and you usually have to buy a new modem even if your old one supported the tech, since they only support specific firmware on specific SKUs. Meanwhile, GFiber is offering 8gbps symmetrical for $150/mo unmetered.
Reminder also that Ricochet was wireless internet in 1994 on 900mhz ISM using FHSS in the Valley. Ooh how far we've come in 30 years.