That's a interesting take. What I have heard from a very old friend of my father is the opposite: > Knowing when to say thanks and when to say sorry is the key

That's a interesting take. What I have heard from a very old friend of my father is the opposite: > Knowing when to say thanks and when to say sorry is the key for success. ...and I have used this piece of advice since then, it paid me handsomely. Of course, this doesn't allow you to be shameless, on the contrary, it requires to stick to your values as a prerequisite. I think what allows Elon to behave like that is how he can retaliate without any repercussions since he has tons of money and influence in some circles.