I don't think you're going to see PED's allowed for the same reason some communities (e.g. California) are now banning CHEWING TOBACCO at major league baseball stadiums -- it's a public relations nightmare. The tobacco increases risk of oral cancers and there's pressure now to not have kids watch their baseball heroes using it. Same deal with PEDs; many, like anabolic steroids, have potential health risks and no sport wants to be seen as setting that sort of example for its fans.