‘Rich’ is not even remotely what conservatives mean by Establishment. We are talking about the McConnell, Boehner, Uniparty D.C. Cartel stranglehold on political power. Trump is their worst nightmare, hence their nonstop efforts to destroy him.
Should Trump become president, he quickly learn that you have to work with Congress in order to get anything accomplished. McConnell will still be around and most likely Boehner. Trump will have to work with them. If the Dems take back Congress, nothing will get done, unless it is all liberal policy. I’ve seen this rodeo before. I live in CA. A wealthy, powerful actor named Arnold campaigned as an outsider with no ties to the establishment. Once he got in he was quickly coopted. Seen this movie before.