Though I have great respect for Sowell and love his writings, he is not the know all to end all. Maybe Sowell underestimates the outrage of conservatives. The outrage of being lied to by a Congress which was handed both houses on their obvious lies. The lies which promised to stop Obama's illegal amnesty, and to repeal and replace Obamacare.
Maybe Sowell underestimates the conservative outrage in regards to Boehner and McConnell capitulating to Obama on TPP.
Maybe Sowell underestimates the conservative outrage on usurping the Constitution by going around Congress and straight to the UN on the Iran Nuke Treaty.
Maybe Sowell underestimates the conservative outrage on the advancement of left wing social engineering in regards to HUD and the AFFH.
Maybe Sowell underestimates the conservative outrage with the treatment of our veterans by the VA.
Maybe Sowell underestimates the conservative outrage on the constant division of Americans by race, income, and gender.
Maybe Sowell underestimates the conservative outrage on Benghazi, Fast & Furious, Hilary's server, IRS targeting, the EPA destroying the coal industry, Solyndra, and a host of other issues.
Trump has name recognition and is receiving ten times more attention than any other candidate. If he can take on addition conservatives issue - i.e. strict constitutionalists, free Markets, Individual liberty, pro-life, traditional American values, smaller government, education (vouchers & charter schools), states’ rights, cheap energy (keystone pipeline), faux global warming, gun rights (even Bernie Sanders is running on this), private property, abolish the IRS (fair tax) or lower taxes, war on terror (isis), drug testing for welfare/entitlement recipients, etc. etc. etc. I believe he could go all the way to the white house. However, the jury is still out on whether his conservative views have evolved as much as I'd like. Only time will tell.