All the history of doping in the Olympics would disagree.
It is possible that some people can reach quite a high level but top out in their natural abilities well below the absolute top of the game and be incentivized to cheat to break through their personal, natural ceiling.
Or even further, look at professional cycling in the 90s and 2000s. It wasn't just people doping to break through their ceiling to reach the top, literally everyone at the top was doping and it was necessary to be able to keep up.
Even worse than "some people are cheating to make it to the elite level" would be "everyone at the elite level is cheating, you can't compete without cheating".
