What would you expect on the ASX? If the RBA decides something...

What would you expect on the ASX? If the RBA decides something and that leaks: what sort of deterrent is there for WHE? The quote from FXJ on the RBA decision 2day "Once again the moves in the currency correctly anticipated the rates announcement by a matter of seconds."
Insider trading on the ASX seems so widespread, I think market confidence is really shaky on the ASX, no governance exists whatsoever.