I disagree. Trump has the knack of conning people. If the Democrats think "I'm not Trump" gets them the White House in 2020, I think they are in for a very rude shock.
Obama and Trump won, in part, because they articulate hope and change to a large enough constituency.
Bingo.
And yes, if the Democrats were in any way adept at politics, they would try to position Trump and the Republicans as the abject failures they are, hammering home how much of an outright corporate and Wall Street shills that they are. Of course, the Democrats at large would never do this, lest they upset their donors. And the Wall Street bankers didn't give a shit when Trump used them as a bogeymen, because they weren't stupid enough to believe it was anything except political posturing.
Since the Democratic base might *actually demand* serious regulations on these entities, they of course, are never allowed to make the same noise.
Instead, it seems, Trump is busy making the Democrats look like the Anti-Flag and Anti-National Anthem party. And the Democrats are happy to indulge him.