Many do but those are the ones I mentioned as exceptions. This is a little outdated (Aranada is now the HC at Baylor and Pelini makes $800K/year as his replacement), but there are roughly 20-25 coordinators who make $1 million or more in the entire country:
https://fanbuzz.com/college-football/sec/auburn/kevin-steele-auburn-contract/
Gerard Parker makes $525K/year at WVU.
Adam Fuller makes $800K/year at FSU.
There's a P5 coordinator getting a lot of buzz behind the scenes with our admin who makes less than Parker does at WVU.
Then there's guys like Todd Hartley (not a coordinator yet but makes $300K/year) at Georgia.
Marcus Freeman, who a lot of people love, makes $600K/year at UC.
I know those last couple of names are off-topic because they're not P5 coordinators, but I brought them up to show MU will have a ton of options whenever a replacement for Doc is needed.