That's not how it works in rural areas, Slick.
You move out into some unincorporated area, and there is no fire department. You get together with other residents in the area and provide firefighting services to people who buy a sticker every year.
It's their fire department, not the people who didn't buy a sticker.
So if they fight fires of people who don't buy stickers, why would anybody buy a sticker?
Plus, fighting fires is dangerous to personnel and equipment. You run a very real risk of breaking equipment that costs hundreds of thousands of dollars, and a very real risk of a firefighter dying. The fire department buys insurance to cover these risks, and part of the underwriting of the insurance involves calculating fire risk to covered homes.
The insurance does not cover the personnel and equipment if they fight fires of non-covered homes.
You're a communist who is too dim-witted to even realize it.
My hall has insurance on the equipment, but not on the personnel. Can't afford it. We're lucky to have turn out gear for everybody and keep gas in the trucks. Every time I respond to a fire I'm taking my life in my own hands (for free).