Sanders: what will the Democratic establishment do for us?

In this video the host asks Sanders will he and his movement support Clinton if she wins the nomination. He turns the question around and asks what the Democratic establishment do for our movement if that happens. Will the establishment, including Clinton, represent all of us or just the upper middle class? Will they continue to participate in the big money, corrupt campaign contribution system or denounce it in favor of small donations, or even better, public financing?

I doubt that the Democratic Party will ever be as he hopes. My guess is that we'll have to form a new Party, like the Progressive Party, to enact the sort of ethical and people-based Party he envisions. By then the Democratic Party will be like the old Republican Party, which it pretty much is right now, and the Republican Party will go the way of the Whigs.