Kanye West — Yeezy

At its peak, Yeezy generated $1.7 billion in annual revenue and made Kanye the richest Black American in history according to Bloomberg, with an estimated net worth of $6.6 billion. Then the antisemitic comments happened, Adidas terminated the partnership, Gap followed, and he lost roughly $1.5 billion in a single day — the fastest wealth destruction of any individual in modern history. Even now, the remaining Yeezy brand is worth hundreds of millions. The cautionary tale isn't that his business failed; it's that he torpedoed a guaranteed legacy by choosing hatred over empire.