In a moment of clarity (or profound dope fueled euphoria) he must've gotten to thinking, "wait, we both do the same thing, and I've got some money, but HOW MUCH am I sending in to Uncle Sam? Why is my bank account so paltry in comparison?"
That definitely conflicts with what one Freeper noted on a thread I saw recently. He or she wrote that Leno's fortune was in the tens of millions of dollars.