Wait. This might be true, but it's not as absolute as that. Tucker is THE 800lb gorilla at FOX. According to Forbes, the advertising metrics firm figures that Tucker Carlson Tonight generates about 16 percent of Fox News' total ad revenue estimated at more than $1 billion. That's a HUGE chunk, and it's a reliable one (needed, in the way that airlines sell the first 50% of their seats almost at cost, just to make sure the plane is filled). Tucker is a reliable brand, and, as such, he has powers and privileges and access to leverage even his #2 competitor at the network doesn't have.

According to Variety, since launching on Fox News in 2017, Tucker Carlson Tonight grew the channel's audience in the 8 p.m. timeslot, a remarkable feat in an increasingly fragmented media landscape. During the second quarter of 2020, the program averaged 4.33 million viewers, a record for cable news. The campaign of Democratic Presidential Contender Joe Biden recently spent hundreds of thousands of dollars advertising on Tucker Carlson Tonight, The Washington Times says.

https://www.forbes.com/sites/jonathanberr/2020/08/29/why-fox-news-pays-a-price-to-stick-by-tucker-carlson/?sh=207c2503ba9c

NOTE: Link to ad metrics no longer resolves