Given that none of us have likely ever held a job anywhere near the pressure cooker of a $9 million salary at the most storied college basketball school in the USA, with the most rabid, high-expectation (some would say entitled) fans, who the heck knows what happens to someone's psyche/brain after 10 years. I've experienced burnout in my basic old six-figure engineering career, several times, and there's really no way to explain it to someone that claims to have never had it happen to them.
Sometimes people just burn out, and maybe that's what's going on. It took me 3 years and a bad review in one job I held to even realize I was burned out. I quit, took 2 months off to refresh, and then made it another 5-6 years before another burnout hit. At least the second time I recognized it and took a month off to regroup.
My point - it's tough for anyone, especially alpha males, to recognize when they've hit a wall and need to either take a break, or move on. Having outsiders badger or berate them doesn't make them suddenly wise up and see the light - they need a real defining moment to get them to recognize it on their own.
(queue the big boys claiming "burnout" is a sign of weakness and that they've never had a day of "lazy" in their entire lives...)