Not sure it was working so well for him at the end of his IU tenure or at TT. Some folks just have a time period when they are supposed to live their lives and can succeed in that time period but then struggle when times change. As great a coach as Knight was, a lot of folks were wondering if the game had passed him by and if his techniques didn't burn teams out by the ends of seasons (hence the one and dones in the NCAA tournament for several years against teams with inferior talent).
I still think technically he was perhaps the greatest coach at preparing for an opposing team with schemes and strategy. But motivationally perhaps, not absolutely sure, players later on just tuned out his anger rather than respond to it. I'm sure no player would laugh at him (ever see Joe Pesci "do you think I'm amusing" scene in Goodfellas) but I've got to believe some players just didn't or don't respond to this. He even said in his book Bob Knight My Story, that players like Jay Edwards didn't respond how he wanted them to. Alford, in a video, said Knight always wanted a player to be the best he could be but the players didn't want it as bad as Knight did. Did Knight adjust? It never looked like it to me. What did seem apparent was the pool of really good players that would seek out and respond to that kind of coaching was diminishing and today, I suspect, is almost non-existent. Is that a good thing? I don't know but I think there is a very fine line between hard coaching and abuse (in hindsight I was coached by a guy that crossed that line in my opinion) and the negative coaching which Knight also wrote a book about, isn't to attractive to kids who want to improve and not be brought down emotionally while doing it.
While Knight was certainly highly successful doing what he did, could he have been even more successful if he was a bit more judicious in his use of anger and negativity? Would those occasions when he used it have been even more impactful? Could Knight have won six NCAA tournaments instead of three? Coach K doesn't use that style and he has been much more successful than Knight.