Oprah actually could pose a real threat. Love her or hate her, she has several things going for her: very smart (she really is), rich, not unattractive, and has a huge following. Kind of like President Trump, but on the flip side of the political coin. That said, think it is too late for her to get into the fray for 2020.
I once talked with a guy who worked for Harpo Productions, Oprah’s old production house in Chicago.
They made EVERY single employee....from the Producers to the make-up artists to the IT guy to the janitor....sign a nondisclosure agreement stating that they will not reveal ANYTHING about “Ms. Winfrey’s personal affairs”.
Anyone who would lock-down all of their employees on that point must have a TON of skeletons in their closet.
And such people want no part of running for POTUS.