that happen, and investing in those people, is one way to get rich.
Companies tend to grow or shrink to the size of their leadership, almost regardless of products and markets.
For example, a thousand guys thought of e-tailing at about the same time. Only one had the gifts to build Amazon.com.
Invest in people, emotionally stable people with a firm commitment to their investors (not greedy), off the chart visionaries with a passion to build a large company with the strength to flourish long after they are gone. Those are 1 in a 100,000 people, and when they emerge, you must see them for who they are and buy in.
Capability/vision is easy to measure from a distance. On the other hand, it is easy to misjudge emotional stability and integrity; unfortunately, sometimes i have done so.
There are other ways to make money. This is my way. FWIW.