Also to make it a sports contest and not a pharma contest. It's the same reason there's a minimum weight for bikes used in the race: people tend to disregard s

Also to make it a sports contest and not a pharma contest. It's the same reason there's a minimum weight for bikes used in the race: people tend to disregard security when making lighter bikes, and the cost of experiments means that some competitors exit the sport because they can't compete on funding.