As the author himself notes, Conservatism doesn't say anything about what you are trying to conserve. While in theory American conservatives work to conserve freedom, liberty and justice, in practice they are more likely to be conserving posistions of power, privilage and wealth.
And how does that differ from a typical "liberal"?
Both sides of the idiological aisle have lots of moneygrubbing SOB's.
Both sides have some people who really are true to their beliefs and aren't moneygrubbing SOB's.