O'Reilly got shitcanned because of several sexual harassment claims against him, and these and similar allegations have dogged him for many years.
O'Reilly didn't start out so bad. He had once been a high school teacher, albeit at a private school, before turning to journalism. Unlike many commentators, he actually was a journalist who started out with local CBS stations, I believe. However, he went on to work as the original host of the television tabloid/news program Inside Edition. This was when I was first familiar with O'Reilly. I watched him nightly on this program. He generally played it straight and didn't interject his opinion on reports. By the mid-1990s, he decided to go back to school and attended Harvard, ultimately getting his master's degree in public administration. Also around this time, Fox, Murdoch, or Ailes approached O'Reilly and offered him a plum job as a host of a talking head program. O'Reilly knew which side his bread was buttered on, so he took it, and the rest is history, or infamy, as it ultimately turned out.
Details on the O'Reilly firing:
Mr. O’Reilly is departing two and a half weeks after an investigation by The New York Times revealed how Fox News and 21st Century Fox had repeatedly stood by him even as sexual harassment allegations against him mounted. The Times found that the company and Mr. O’Reilly had reached settlements with five women who had complained about sexual harassment or other inappropriate behavior by him. The agreements totaled about $13 million.
Since then, more than 50 advertisers had abandoned his show, and women’s rights groups had called for his ouster. Inside the company, women expressed outrage and questioned whether top executives were serious about maintaining a culture based on “trust and respect,” as they had promised last summer when another sexual harassment scandal led to the ouster of Roger E. Ailes as chairman of Fox News.
It didn't make sense to ditch Ailes yet keep O'Reilly around.
I don't think he will starve to death. Somebody in another network might actually pick him up.
Possibly he will turn to writing full-time. He already has a bunch of (probably bulk-bought) bestselling books.