Its profits collapsed overnight, and in the rescue operation both Robert and Michael Greenberg were ousted.

FORBES: Sole Survivors

Michael Greenberg watched for years as his father, Robert, though inventing nothing himself, made a lot of money on other people's ideas.

FORBES: Magazine Article

Michael Greenberg was in college when Robert, who owned a women's apparel shop called L.A. Gear, started importing simple canvas sneakers to tap the aerobics craze in 1983.

FORBES: Magazine Article