I think the key point is that Calipari truly was the PERFECT coach for Kentucky. Any move they made was going to be a move down. That simple fact made any and all other candidates highly skeptical of the job.
Calipari may not have been as nimble as he could be to catch on to the fact that retaining talent was to emerge as a key to winning in the 2020's, but Cal's comments upon taking the Arkansas job strongly suggests to me that Calipari my have actually been hindered by lack of support at Kentucky. So, the lack of nimbleness may have actually been above Calipari at Kentucky, and that their model of acquiring elite, one-and-done high school talent every year, and needing to reload with inexperienced players every year may have been encouraged from above.
I am eager to see how Calipari handles roster management at Arkansas and see how much different it is compared to how he did things at Kentucky.
As for Kentucky, the AD made an unequivocal gaff. Pope may turn out to be Da Bomb, but more than likely Kentucky nation will have to eat a large portion of humble pie and learn to be appreciative of wins when they come. That is certainly what they need.
It is notable that both UNC and Duke avoided this problem of succession of the emperor by nurturing the successor from within in Hubert Davis and John Scheyer.