Agreed. SpaceX is an excellent example of how culture comes from the top. I used to have a boss who complained that his employees turned up late or not at all

Agreed. SpaceX is an excellent example of how culture comes from the top. I used to have a boss who complained that his employees turned up late or not at all for meetings. He would often turn up late or not at all for meetings. I had another boss who used email excessively. His team used email excessively. Elon Musk is mission-driven, work-oriented and puts in very long hours. Thus SpaceX is mission-driven, work-oriented, and people put in long hours. It's all a matter of choice, I admire Musk and SpaceX whilst also appreciating many people want to spend more time with their family. Just an observation to think on next time your employees don't exhibit the culture you'd like - the answer can often be found in a mirror.