I agree with this. Culture in organizations is most definitely a thing. Many a doctorate thesis has been based on it. Look at your workplace and try to imagine how difficult it would be to change small operational mindsets. A diverse environment with a common, accepted way of thinking/doing that many of the folks know is not the best way to do things. Why is that? Culture, in good part.
It usually is a result of leadership, but hwen the culture is ingrained even good leadership has to expend great effort to turn the ship.
The Sabres leadership embraced acceptance of losing, and that acceptance is proving hard to let go of.