I'll honestly be really surprised if Mark Davis up and fires McDaniels and Ziegler. Doing so would set the team back another 5 years, maybe longer. Mark lived through the 10+ year stretch where his increasingly senile father fired coach after coach after coach every other year, and the team got worse and worse every time. Cleveland's used this strategy to the same effect for years as well. Detroit used to employ it a lot too. It's also been tried a lot by the Texans, Cardinals, Jets. Look at how great those teams have been over the last 30 years, until now, perhaps the Lions, and maybe Browns finding some stability - though I'll argue owner Jimmy Haslem's insistence on giving Watson that enormous contract, and all those draft picks to get him, shows how well owners know football. Houston got lucky on that one. Let's see how Ryans does as the Texans coach, unless they just can him too as soon as the team loses a few games. Mark Davis has never been his father, but he's also never been that fire happy of an owner. He fired Del Rio in order to get Gruden. But even when Gruden was doing poorly, and he was first informed by Goodell about dirt on him, he wouldn't just up and fire Jon.
Lots of Raiders "fans" were screaming for McDaniels and Ziegler to be fired in the off-season, so the team could hire Sean Payton to do both jobs. Look at how great that's turned out for Denver.
This kind of corporate america CEO impatience, where it's assumed someone who makes mistakes can never ever possibly learn from them, and you'll find some perfect genius to replace them, zero time to grow and instant success must be assured, is the near opposite of the most successful teams in the NFL, or sports for that matter. Same with businesses, really.
Let's go back to 1980. You're an NFL owner. You hired a coach two years ago, and he went 2-14, then 6-10. His rookie QB he was so high on has only been 2-6, with a 15-9 TD/INT ratio. What a loser, a pair of losers. Fire them and get someone in there who knows what they heck they are doing.
You just fired Bill Walsh, and cut Joe Montana.
Let's go back to 1989. Your new coach goes 1-15. The hot shot QB he drafted is 0-11. Then, this coach has the audacity to trade away your best player, the best player in the league. Fire this idiot and cut that lousy loser of a QB!
You just fired Jimmy Johnson and cut Troy Aikman.
Flipping the table over every time things don't go well, and then expect a different result, is a recipe for continuous failure.