A good company culture is one that the whole company follows. As opposed to a bad company culture, where there is basically no global culture to speak of, and every manager has their own little fiefdoms.
Fiefdoms are bad, but is a company monoculture necessarily a good thing? Perhaps different teams (especially if geographically dispersed) can adopt a culture that works for them rather than follow some top-down mandate that they'll follow half-heartedly if at all.
Arguably beyond a certain size and other than some basic rules around things like good behaviour and ethics, I'm not sure you can have a one-size-fits-all for a company (or any other) culture.
That's such a narrow definition it almost feels circular. If there is no global culture throughout a company can you even describe it as having a company culture?
