Josh Marshall really has an epiphany here in diagnosing Trump-think.
To the President, soliciting political contributions creates a bond of subservience against which any subsequent caviling about mammoth political differences is either sleazy, hypocritical or disloyal.
What it all amounts is that personal loyalty, a kind of mafia-like allegiance, is the only legitimate mode of interaction. Which is to say, in Trumpthink, only corruption has legitimacy.
Trump sets himself up as the only source of power and you either come to him as a supplicant or you are an enemy in what can only be described a medievel way of thinking.