Google have been real bastards when it came to this; they happily turned a blind eye to it for the last year, but the second FTC get involved, and there were threats of a law suit for the 'Google Profit' Biz Op's they suddenly point the finger at the advertisers and ban everyone involved. Typical example of a big corporation, quick to point the finger to avoid heat.
Honestly, put yourself in their place and lets say it was your business and your money. Would you have done it any differently? I am 100% sure you would gladly taking the big money day after day from rebill advertisers as long as you didn't have any problems. Then when YOU are threatened to be sued I am also 100% sure you would turn around and blame your advertisers and then ban them.
Come on man, be realistic. You probably blame "the man" and big corporations for all the worlds problems im sure.