Reagan had been out of acting for almost 40 years, was better known for his GE/SAG political speeches and had been a two-term Governor and had run for the Presidential nomination twice already before he won. He had pretty much fully transformed himself into a politician first in most people's minds.
Oprah's too smart, too private and too rich to run for President.
ResetERA.com's going to tear itself apart over the primaries. The fact that so many are latching onto Beto, a total unknown until the day before yesterday, and Harris, a corrupt cop, for entirely telegenic reasons is hilarious. Especially when there are so many big guns yet to unfurl and internecine scorched earth warfare yet to happen. They basically didn't notice that Jay Inslee declared despite the regular obsession with the Earth literally dying in a few years.