I actually have, even if you are unwilling to recognize it. See, e.g., Oubre (where I left the board for 3 months), Morant and Baynes. Besides, I don't get paid millions of dollars to comment on this board or to put together a roster, and fans aren't spending millions of dollars on tickets to see the product that I assemble...
If I were to do in my profession the equivalent of what James Jones has done as a GM, I would be sued for malpractice. If I were to fail to learn from that and keep repeating the same mistakes, I would be unemployed...