Successful people make money. It's not that people who make money become successful but that successful people attract money. They bring success to what they do.
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It's hard to tell with these Internet startups if they're really interested in building companies or if they're just interested in the money. I can tell you though: If they don't really want to build a company they won't luck into it. That's because it's so hard that if you don't have a passion you'll give up.