None of this has anything to do with the fact that he sucked on the defensive end of the court in a historic way. Could we have gotten more for him? Sure, except he and his agent were douches who hurt that chance and perhaps many other teams simply had no interest in overpaying for a one-dimensional player. Either way, as a GM, you're not going to win every move. DL's won most.
Different coaches, different systems, maturity, etc..
Truth is Enes is better than we want to believe but he wanted out, through his hissy, and got his way.