Past performance is not a guarantee of future returns. Someone can be brilliant for a long time and still get played in the end. Just take a look at what happened to Tony Hsieh after he got hooked on drugs:
https://www.forbes.com/sites/angelauyeung/2021/01/26/cause-o...> But instead, the community turned into a hedonistic enclave, where people on Hsieh’s payroll indulged his every whim — such as conducting a research report on the laughing gas nitrous oxide, which he was consuming daily, to figuring out a way to stop time—and were less willing to curb his increasingly concerning behavior and excessive drug use, Forbes previously reported. During this time, Hsieh resisted attempts by family members and close friends to check him into rehab, according to multiple people familiar with the matter. By the end of July, Hsieh was estranged from his parents and several of his close friends.