I like your mathematical suggestion. There's a lot of contamination in many products nowadays and that not only is about Big Pharma but all sorts of food and drinks producers. The hard core ones that claim ban everyone who's found guilty do not realize all the aspects of the issue. The problem with your proposition may be that large corporations and the powers of tennis have it easier to target the working class which in this case is the players than the wealthy CEOs and their investors that depend on yield from a stock.