The players aren't loyal to the schools. The schools aren't loyal to the players. The coaches aren't loyal to anything. It is all chess now. As fans we have to adapt and just demand wins in the same way the players demand money. If they don't produce, fire them. If they do produce, pay them.
Just cheer for "Brigham Young" on the front of the jersey and don't expect familiar faces from year to year. Occassionally, we'll get lucky and have a star BYU "guy" that we can really celebrate. They will be fewer and farther in between.
But we have to adapt and we can't be sentimental.