We are an oligopoly economy: Robb OPPOSITION finance spokesman Andrew Robb says Australians should not be opposed to creating national champions in key industries provided they comply with competition laws, claiming Australians need to accept that the nation is an "oligopoly economy." Mr Robb -- an ex-Liberal Party director who had significant roles in the private sector, including working for the Packer family, before returning to politics -- said it was important that Australian companies were allowed to expand to achieve "critical mass."