Doesn't matter, Boost, Cricket etc are all owned by the 3 major carriers. Hell even a company that isn't own by one of them still has to pay one of the 3 to use their lines, so in a long way around your still paying one of the 3. They own all the lines and the towers. We used to bust up monopolies but those days are long gone.
Problem is all phone carriers are Trump supporters in America and before you suggest a carrier keep in mind they are owned by one of the big 4. AT&T, Verizon, T-Mobile, and US Cellular . And US Cellular is being bought out by T-Mobile.
So basically you won't own shit.