As long as there are completions, people will compete and use what ever means are available to them. Rules and regulations are a cat and mouse game between the governing body and the competitors, with the primary goal being to keep the playing field as level as possible so that the outcome remains unpredictable as possible so that the paying fans get a spectacle. In recent times drugs have been outlawed mainly for moral reasons, although competitive people will continue to seek whatever edge they can regardless of the harm they may be doing to themselves.
Sky are just the latest outfit to be called out for using the regulations to their advantage, mainly because they have been more effective at it than everyone else for too long now.
I note with some cynicism that other teams and professionals are keeping their collective heads down.