Not a very strong one. I wasn't trying to argue, but rather suggest a new perspective. That out of the very few who strike it rich founding startups, there are many more who have earned a good salary and saved away a good amount of money while working their way up the corporate ladder.
"Rich" is a moving target for most people. As I noted, mine is different than most in the startup / bay area. I've been enough 3rd world countries to know what I need for comfort and happiness in my own life.
To have a few hundred $k in your bank account liquid is meaningful wealth. If you think in only sports cars and large houses, then yes... that goes quickly. If you think about it as the ability to travel, have leisure time, afford quality foods, etc. Then it is a quality of life that most in the world can't enjoy.
I agree with your last point to never do any kind of work just to get rich. Work on what you love, as a founder or employee.