PWC apology "too little too late". Have we learned from Royal Commissions into banks and casinos?

The heat is turning up on the embattled consulting giant PwC as pressure grows for the firm to be banned from all government business.

That's despite PwC putting nine partners on immediate leave and the firm's acting chief executive apologising for confidentiality breaches about a multinational tax avoidance crackdown.

But it raises a big question.

Have we learned anything from the Banking Royal Commission, and two Royal Commissions into bad corporate behaviour at the Crown Resorts casino empire?

I speak on ABC Newsradio