I worked for a Silicon Valley company that became quite successful. I made enough money to quit and live off the investment income. I got to the level of wealth I needed and it was enough for me and retired. I enjoyed my work and my job, but I also wanted to do other things in my life, and having a full-time job in Silicon Valley precluded that.
I was at my employer early enough that I had quite a bit of personal contact with the CEO at this company, and he did not think like me at all. Money wasn't the main thing for him. He wants to chase down his competitor, watch it struggle in death, chew on the meat, bury the corpse, dig it up again, make sure it's dead, and then bury it again. This guy lives for the hunt, and the hunt is all there is.
When I figured this out, I realized I could never be him. I couldn't summon that level of motivation on a constant basis even if I used every bit of my willpower.
And I'm glad that I was on this guy's side and not his competitor.