It really depends on your definition of rich. Most salaried employees would consider themselves rich with a couple of million in the bank. Many private compan

It really depends on your definition of rich. Most salaried employees would consider themselves rich with a couple of million in the bank. Many private company owners have this level of wealth, and many wouldn't desire a higher level of success. I guess if you want 'have my own jet' levels of wealth, sooner or later you'll need someone else's money to help, even if it is just to secure their contacts/expertise. It's probably neither complete causation, neither unlinked correlation, but rather a more symbiotic relationship. People on the way to great wealth pick up investors. Sometimes they are cause, sometimes they are effect.