Programs like Boise State and TCU will come along and surprise everyone occasionally. However most people expect them to fizzle. The reality is that their success is usually attributable to one or a few exceptional coaches. More often than not, those coaches get hired away to the programs with... revenue.
Even the altruistic coaches that forego those opportunities eventually die. Sooner or later, they become Boise State will go back to being a has been from a minor metro area in rural Idaho.