Comment by whodidntante

True, but I was around and saw first hand how Zuckerberg dominated social networking. He was pretty ruthless when it came to both business and technology, and he instilled in his team a religious fervor.

There is luck (and skill) involved when new industries form, with one or a very small handful of companies surviving the many dozens of hopefuls. The ones who do survive, however, are usually the most ruthlessness and know how to leverage skill, business, markets.

It does not mean that they can repeat their success when their industry changes or new opportunities come up.