Article continues below advertisementOnlyFans' billionaire owner Leo Radvinsky has devastatingly died at age 43.A spokesperson for the subscription platform confirmed the sad news in a statement to TMZ on Monday, March 23, writing: "We are deeply saddened to announce the death of Leo Radvinsky.""Leo passed away peacefully after a long battle with cancer," the message continued. "His family have requested privacy at this difficult time.