the power players in NCAA football are not-so-quietly forming a semi-professional football league. BYU is way outside that circle, with the only conference that fits geographically having invited their rival, which outside of a few years, has had way less success and exposure than BYU.
The big12, when needing to expand, took a school that averages 1/5 the fans at their games.
BYU neither has the conference affiliation nor the stomach to compete in the modern world of college football. If you think the church is going to start paying players you're crazy.
BYU competing with USU as the 2nd best team in the state, and being around a mid-level MWC team is not surviving under my definition of surviving.