Earlier quoted context omitted.
Not with BYOD
I refuse to BYOD, so I am not familiar with the nuances, but wouldn't the corporate controlling entity wipe/reset/deauthenticate the corporate partition of the device?
That entirely depends on how it's implemented. At least Windows, Android and iOS have the functionality to delete Work accounts / profiles.
But I've also seen companies with no MDM at all, so YMMV.