Trump expressed far more moderate views in the interview than he did on the campaign trail. Are you surprised? I can pretty well guarantee you that he will say the exact opposite the next time he meets with a group of right-wing supporters. That is partly due to his belief that being unpredictable is good tactics, partly to his desire to be admired by whomever is in the room at the time, and partly to the fact that he knows very little about policy, and cares even less. If the truth is a casualty in this process, well, truth is just power in a tuxedo.
The “Real Trump” truly believes that he can run the country the way he runs his businesses. His mercantilist opinions are genuine; he has held them for decades. He thinks that businessmen like himself know best, and will do whatever he can to unleash them. He will react violently to affronts to American (or his own) self-esteem, and he has an intense belief in his own ability to negotiate. Everything else will be on the table, and failure, or at least the perception of it, will not be tolerated, even if the law is on the other side.
The roller coaster starts running in 58 days.