Most people here seem to think that startups are more net productive / innovative / whatever than large corporations? Even if this is true, that doesn't mean that everyone should join a startup.<p>Big companies like Goldman, McKinsey, and Google provide value not only to normal people, but also startups. Google builds tools and infrastructure that help power the Internet. There are probably tons of startups that rely on Google products like Gmail and Google Maps, and without smart engineers working at Google, those startups would be worse off.<p>McKinsey provides consulting services to companies big and small, including startups. Some startup engineers may not have the best knowledge for how to best access a foreign market, and companies like McKinsey, who do this research all the time, provide valuable business advice about how to set prices, enter new markets, structure growing organizations, and all kinds of other business questions that startups may not know how to answer.<p>Even Goldman Sachs has something to contribute to startups. GS financial advisers (as well those other banks, obviously) are the ones telling large sovereign wealth and pension funds to diversify their allocations into categories like venture capital. This money is critical for lots of startups to grow.<p>Maybe these companies aren't completely necessary for startups to start and grow, but they do have a lot to contribute to this space.