Plus Utah has USU to also contend with. Utah has the smallest population and 3 division 1 schools. Utah easily has the smallest fan base in the PAC12. It's not even close. WSU's fanbase could easily be as big as the entire state of Utah, even being the less popular school in the state. The numbers just don't bear out Utah having even a comparable size fanbase to any other PAC12 school. There's just not enough people in the state.
What the state of Utah does have, is passionate fans. The west coast states have lost that in becoming so liberal.