Absolutely. Even when the first success was largely luck. I know a lot of early Microsoft employees who became successful (read: wealthy) very quickly and many

Absolutely. Even when the first success was largely luck. I know a lot of early Microsoft employees who became successful (read: wealthy) very quickly and many of them harbored a belief that they were capable of success at anything and that their advice was of a superior caliber. This belief has, through the subsequent years, proven to not be all that true.