To clarify: it's a damned shame, but guys like BRB aren't "the people" (if only, and I mean that). A real conservative has roughly no representation, which unfortunately seems about fair because there are apparently not very many of them.
If there were, Trump would be plummeting in the polls and Johnson would have a viable candidacy. But the popular movement we have is not that of conservatism, it's that of nativism. I'm holding out hope, but it's not what's happening now.
So conservatives don't have a people's movement. And they don't have an establishment movement, either. If they did, House speaker Paul Ryan would look at Trump and say well, f--- that. GOP lawmakers and GOP-aligned advocacy groups would rebel en masse. Libertarians ran GOP campaigns in '08, '12, and '16. Johnson and his VP are both GOP men, for goodness sake. Endorsing them should *not* be a problem if a conservative establishment exists.
But none of this is happening. All of these tides -- popular, elite, establishment -- have by and large decided to throw in for, or tolerate, Trump.