I play the game strictly as an "observer" of the game world. I will often modify coaches/players to create situations interesting to me to see how it affects the world.
One thing I have noticed is that if I pick a low prestige team and modify the coaches/players to make them outperform and increase prestige, their budget and facilities never change. I have done this with teams for 25+ seasons several occasions and I have never once seen the budget or facilities change. Inevitably, the school in question gets its prestige high enough that it hires coaches at/beyond its budget and can no longer recruit, causing a death spiral.
What is the reasoning behind this? It would seem to greatly favor the player actively coaching a team - the other schools in the conference will never be able to keep pace and you will eventually dominate simply because you have so much better budget/facilites to work with.