It takes more like 10 years and hundreds of thousands if not millions of dollars - and the luck of the draw - to get your case heard by SCOTUS, and this for something that is "free" and "a right," namely, justice. Compare that with the worst private service, like a phone company.
And no, there are no laws prohibiting people from starting a FireBusters franchise, but there are unquestionable market obstacles to entering a business already occupied by a mandated government monopoly that everyone thinks is "free". Then again, UPS and FedEx realized that even with the USPS being said government monopoly for mail services, there was still room for competition and had a go at it. And now the USPS is responding by cutting services and raising rates. And it is acknowledged that the USPS hires one of those companies to transport First Class mail - because it's faster and cheaper.
I didn't know you had so much antagonism to free markets as well as to personal freedoms.