Why is it that nobody "worth the money" wants the job? Is it the 'upper management' they don't like or just the program itself?
How many guys "worth the money" move from major job to major job in the offseason? That's the biggest factor. Guys you want that are already at major jobs rarely move from those jobs unless their situation is bad behind the scenes (see: Jimbo Fisher at FSU). Realistically, you have two options when hiring a coach: Longtime assistant or up-and comer. Let's look at the current AP Top 15 and there their coaches came from:
1. Hired away from the NFL, which he had concluded was a bad fit.
2. Hired from then-mid-major Cinncinatti
3. Assistant coach elevated after the head coach was suspended, then reinstated, then retired
4. Assistant coach elevated after the head coach was fired mid-season
5. Hired away from another P5 program
6. Hired away from another SEC school, returned to program that launched his career in a "dream job" scenario.
7. Assistant hired from P5 school.
8. Coordinator hired to return to alma mater
9. Assistant hired from P5 school.
10. Assistant coach elevated after the head coach was fired
11. Assistant coach elevated after the head coach left for Florida State
12. Assistant hired from P5 school.
13. Hired away from another P5 program to return to Alma Mater
14. Assistant coach elevated after the head coach left for LSU
15. Coastal Carolina - doesn't count
So when you look at what happens in the vast majority of coaching hires, what is Tennessee not doing that others are? I'll give you Nick Saban. Tennessee offered Dan Miullen more money than Florida did, but he valued the Florida job from his time there before. Paul Chryst at Wisconsin was hired away from Pitt, but that barely counts. Basically everyone else was either a risky coordinator hire or taking a swing on a mid-major guy.