You should cut Kurt Angle some slack as he won his gold medal with a severely broken neck - after coming through all that coach Dave Schultz murdered by John du Pont drama.
He initially rejected pro wrestling but went on to be one of the top earners, praised by nearly everyone he worked with for his dedication and professionalism. Only accumulated injuries and struggles with pain medications made him stand down.
I only mention Kurt Angle because he’s a good example of how, despite all that training and reaching the pinnacle of Olympic gold medals, there is no future for those athletes other than product endorsements, or in his case, a television stage.