The rise of Donald Trump has exposed a deep chasm in America between the haves and have-nots. I could go on, but you have probably read that story by now. You’ve also likely read about conservatives who think that stopping Mr. Trump is the only way to save their cause. I’m here to explain why they couldn’t be more wrong. What principled conservatives fail to understand is how the nation would benefit from putting a right-leaning entrepreneur in the White House.

I too began the primary cycle as a critic of Donald Trump. I’ve...