I'm with @northbaybbguru I'm pretty sure most clock operators are either volunteers or someone involved with the school or athletics administration. Gotta have a shot clock.
Maybe in some places. In others, if someone from the school works extra hours, they get paid. And finding and organizing volunteers is a lot easier in successful programs than in struggling ones -- and if you mandate it, everyone has to figure out a way to do it.
I agree that the shot clock should be everywhere, but I do think just saying every school, no matter how small or unsuccessful, should make it happen is asking more than some might think.