You and I definitely agree on this. Imagine if a university was building its basketball program and making gradual improvements every year. The 4-5 year head coach (just an example) kills it with a banner recruiting class...then bolts to another program and takes his recruiting class with him. That could set the university he's leaving back 5, maybe 10 years depending on the situation...way too much anarchy for my liking.
Doesn't that happen already? It pretty much happened with KS, though none of them followed him to Indiana. Roy Wiliams took Hansborough with him to UNC if I remember correctly. The idea of coaches routinely bringing more than 1-2 guys with them to their new job seems overly dramatic. I'm sure that Self would have loved to bring Brown and Williams with him to KU, but he wasn't going to import half of a roster. If it became an issue, the NCAA could easily pass a rule that states that a school can't receive more than 2 transfer from one school in a given year, and that would take care of that.