Justin Gatlin, Yohan Blake, Tyson Gay, Asafa Powell, Carl Lewis, Franky Fredericks, etc, wouldn't dominate the 100 meters? And guys with European, etc, ancestry would be able to win?
I don't. I think if everyone were clean, the guys I mentioned would still be the top sprinters in the world with a little slower times.
And if everyone is doping like some of the guys above who have already been caught, and as guys from Russia, etc, have, then the guys mentioned would still be/are the fastest. Same goes for the women's side historically and the women who won the 100 last night. (Sha'Carri Richardson would have had a say though if she ran.)
Everyone was clean when Jesse Owens was allowed to compete and won.