For decades, Donald Trump and the entire Trump Organization have had one asset - the Trump brand. The most unlikely president plastered the name, Trump, on buildings, on airplanes, in casinos, a supposed university, books, wine bottles, steaks, and golf courses. Even his kids are branded.
Winning (in a way) the presidency four years ago has not been good for the brand. He's been overexposed, subjected to the sort of scrutiny he avoided for so many years as he established and groomed Trump the Myth.
Serving as president takes a toll on even decent human beings such as Barack Obama.