I don't think we can. Like Scotland Yard, the Republican establishment always gets its man. Why? because all our little primary voters seem to know is whose "turn it is."
More to the point, who IS the "Republican Establishment". It's not just a handful of people in the RNC -- it's tens of thousands of party officials and politicians in every little district across the country. They are the ones who benefit from the government being a mess (because they are the ones called upon by business owners and private citizens to fix problems that the broken government creates). It's a big organization to take over.