But Donald Trump is no such thing. In fact, the prospect of a Trump White House strikes fear at the heart of capitalism.

Trump has hammered Wall Street in recent speeches, wants to raise taxes on the rich and has embraced policies that will hurt many multinational companies.

"Wall Street hates him because he is a class traitor," said Greg Valliere, chief political strategist at Potomac Research Group. "He has bought into the populist rhetoric that Wall Street is greedy and makes too much money...He sounds more anti-Wall Street than Elizabeth Warren."

Trump could spook the stock market

Trump's unpredictability introduces a new level of uncertainty. It's a huge negative for investors, who want to map out likely outcomes before committing money on the future.