I hope you’re right. I just can’t see it that way. Yes, he has everything any normal person could possibly need or want. A narcissist always wants more.
I believe his best use is to drive the narrative more to the conservative side and get more conservatives out to vote. He’d be useful in another role in a Cruz administration. But he would not settle for that. His talk about a third party run would only hand this over to the left, and he knows it.
Maybe Trump, being of that era, wants to wake up the beast, US citizens, and also clean out the DC sewer? It's a common desire among my peers, whatever our politics.