Because these are people who derive their current and future income from the lobbyist big government teat....
If this system is destroyed....their vacations, private schools for their kids, mortgages are all at risk.....
They will never listen to reason.....
This is why they would support Hillary over Trump....Hillary will maintain the status quo and eventually they know they will win an election again....
That is as plain as ever...I do not understand why some people who come in FR cannot see this.
More like, the reasons they give are never the REAL reason.
They are embedded into the Establishment, and are afraid that a Trump administration will (as you note) not be as beneficial to them.
But you can't reason with them on that basis, because they will not admit to the real reasons.