None of them are going anywhere soon, as advertising are still lining up to pay them for their airtime.
Ad rates are generally determined by audience size. The smaller the audience the less it costs you to buy time. So however much one spends for a spot on MSNBC or CNN, that same spot would cost a lot more to run on Fox because its audience is 2-3 times the sizes of the aforementioned alsorans.
Ailes primarily founded FBN to compete with CNBC, battle them for audience share. If anyone thinks it doesn't sting the CNBC suits to lose their biggest star to the competition, they're either a dope, a dupe, or a hopelessly disingenuous partisan hack. And possibly all three.
Strategically, Ailes has a distinct advantage that he's capitalizing on. Part of MBs audience will jump to watching her on Fox as soon as they're aware she's there. Good luck replacing them. Current Fox viewers are likely to welcome her because she's good at what she does, her track record speaks for itself.
But then Roger has also pulled an ace out of his sleeve by slotting her for a Sunday gig on the Fox News Channel and its much larger audience than FBC. He'll be exposing her to them and you can bet the ranch there will be copious reminders and probably ad spots telling that audience she's also got a weekday show on the FBC. Welcome aboard new viewers.
So basically Roger Ailes is just doing what he does best, slicing and dicing away at his competitors by offering viewers a better product. And we get to sit by and watch CNBC begin to crumble as a result. Fun, huh?
CNBC is not going to crumble.
She's over 40. Time to jettison her for fresh talent.
Sad, but true.
However, given that Fox's demos are 70+ males, Maria IS fresh talent for them.