This is like trying to make a nationwide "mesh" of cell phone towers. Some towns are just difficult with real estate, permitting, etc but you try to make do to serve your customers "everywhere" first even while you're concurrently looking to improve.
Tow truck drivers are, at times, not paid hourly and on call 24/7 and make ~$30 per dispatch. How would you like to interrupt your life, dinner with family, whatever to go to work, to meet someone pissy that you took "too long" (even if it's 10 minutes, it's 10 minutes they weren't planning for)? Then they get stuck with an unexpected "car bill."
Toyota's a mass market carmaker, they'll use the same tow companies as Geico, your credit card, etc. If your town supported a "concierge" tow service it would be a very rare town indeed.