Why major media never discusses the issues

In this video Hartmann accurately describes how major media never discusses any issue any more like they used to. Any issue, like even minimum wage, or tax rates. Or anything. On most issues the public sides in polls with the progressive take, like increased minimum wage, higher tax rates on the rich, legalization of marijuana, against free trade deals like the TPP--the list goes on and on. And yet not a peep on any of this. Why? Because major media is big business and to actually inform the public on issues would be to defeat their purpose, which is against all of those issues for its own corporate gain and nothing else.