All this boils down to is that it's really hard to win a National Championship. As much as we bemoan how we never have all the pieces at the same time, it is not a unique phenomenon. Georgia just won the last 2 titles, has mountains of local talent, a rabid fanbase, and all the institutional support you can think of. But before 2021, their most recent NC was in 1980.
I really think Saban at Bama has ruined the perception of what success looks like, because runs like Bama's are not supposed to happen. Even really astounding success in this sport is supposed to look more like Clemson, where you have a magical 5-6 year window where you're team is humming, and then you *hope* that you can hold on by not becoming an embarrassment until your next run.