While I think that the characterization of the Trump campaign as a start-up is interesting, I don’t think it really explains what we’ve witnessed. Trump’s campaign is an insurgency. That was pointed out as early as February of this year by John Robb:
Trump is trouncing the competition. He’s doing so well that the prediction systems give him a 81% chance of winning the nomination — despite the opposition of the entire Republican establishment.
What’s most surprising to many pundits and analysts is that Trump has done this without presenting all of the detail plans, voluminous position papers, etc. that we’ve come to expect over the last couple of decades.