Having HDQ in small old SGU definitely makes business traveling more costly. I guess to some extent they cant attract from as large of a pool of talent as say LA, NYC or ORD. But you need to realize that the costs of being in such a place offset the savings. Average wages for even the lowest position would be required to be much higher to offset cost of living and hire competitively. The tax burden in Utah and SGU is very low, and the city caters to them like a groupie, it being one of the largest employers. Also, if they move they are going to have to spend tens of millions on construction and real estate, or a fat lease payment. Considering they've been on 444 S River Rd for near 30 years means something. I assume its payed for, only (cheap) property tax. Or they could be like UA and rent a chunk of the Sears tower. It would also cost millions to move all your stuff from A to be B.
At the low end jobs, wages there are equal to FA first yr pay, and usually have pretty good employees for that kind of wage, because there aren't that many other jobs. CS is what it is, you dont need a bachelors in Communication. Middle management is mostly promoted within and might be less talented. Top end jobs the talent is high, they know how to scout well. Just look at the results.
Its not moving. Also consider some non-business factors. The Atkins are some of the original settlers of SGU, CC was born and raised in CDC, nearly all the upper management went to college in Utah. They all got their mansions built, and families established into the community. Again, not moving.