If, as the author claims, the economists all knew the efficient market hypothesis is mistaken, then why didn't they inform the public during the bubble, and get

If, as the author claims, the economists all knew the efficient market hypothesis is mistaken, then why didn't they inform the public during the bubble, and get it to pressure the politicans to regulate the financial markets? Also, whether or not the economists believed in the efficient market hypothesis at the time, the conservatives and libertarians sure did, and they continue to do so.