Much like swimming who has rules about swim suit fabrics used, organizing bodies have the "ideal" that all competitors should have access to the suit technology so the base line playing field is level.
There is so much money involved these days, the concept of 1950's amateur athletes and rules about what equipment can be used went out the window decades ago.
Yeah, if the playing field is not level, the winner might be someone who has access to better technology rather than the best athlete.