Failure is always the consequence of over-reaching hubris. We actually have Obama and his ‘affirmative action’ policies to thank for the present disconfirmation of the progressive hypothesis.
An adage has it that there is no limit to what you can accomplish if you don’t care who gets credit. Narcissist Obama NEEDS to take credit for everything, thus he interferes everywhere, blames everyone else and thus gets no cooperation from those who are able to actually do things.
If Hillary had won, she like slick Willie would have taken undue credit for any economic recovery but without the active interference that is now preventing it. It would have helped progressivism seem sustainable.
Again, there’s no argument conservatives can articulate that is as irrefutable as what liberals actually do when they get to govern.