Not very surprising - Michael Schumacher is the most successful Formular 1 driver ever. He was champion 7 times. Until he had a skiing accident some years ago, that left him in a coma since. What a irony: a racing driver who had dozens of accident that he walked away from - and then a accident at a skiing vacation ruins his life.
His brother Ralf is example that a big name can be a burden as well as a help. He came into the F1 when Michael was already a champion, so everybody expected Ralf to do the same. He won a few races, and was not so bad, but never on the level like Michael. Must be hard to always get compared to the big brother, I guess. But finally he succeeded, in a way - he is rich and still healthy now.