The problem is the incentive structure. We know the drugs work, we know they have serious medical side effects. So the only question you'll be answering is "Which of these athletes is willing to trade off the most dire long term health consequences to win". And the answer will be that some athletes are willing to do practically anything and will die of various entirely preventable problems at incredibly young ages. And what's the benefit? Some measure will read 1m 57 seconds instead of 2m 4s?
Motorsports do bring something extra. Just how fast machine can we build.
Gladiator fights is different thing and modern weapons make them rather boring. And somethings like biological weapons could take too long time to be effective, so you only see one person keeling over...
