Snark attracts attention and the attention generates ratings and ratings translates to $$ and newscaster career path. Unfortunately, there is a segment of the public that votes for the person that is most in the news.
In terms of capital efficiency, Trump's campaign has been stellar. The media was falling all over itself to give him coverage, why advertise?
Trump passes himself off as more honest than the lying career politicians, but if he now tries to broaden and soften his message in order to appeal to a broader segment, I wonder if the original supporters will feel betrayed and that he is lying now or was lying then. I suppose he could wink at the original supporters to let them know that he lying now in order to make sure that he will be elected. The wink will be "Trust me, I need a little deception now just to negotiate my way into office, then I'll follow the original addenda."
If elected will he revoke the press credentials of everyone who criticizes his agenda or performance?