I think one of the biggest issues in the DNC right now (besides that whole shitstorm in Iowa) is lack of cohesion and unity. While Trump sucks it out of his followers through intimidation and fear, he is absolutely correct in noting that Democrats are splintered and unorganized. There is not enough agreement and way too much infighting, and I believe you have nailed it on the head by saying that Bernie threatens their old school cronyism that taps into finances, same as Trump. Bernie may or may not have the support to beat Trump, but he is the candidate that offers a clear way forward vs maintaining the status quo.