Elon Musk is now a trillionaire, SpaceX has a valuation that can only be explained — wait, it can't be explained — and some people think it's immoral for people to be able to become billionaires and now trillionaires. I don't care for Elon, but I certainly don't have a problem with people creating lots of wealth for themselves. In fact, I think it's the outcome we want, provided we do the things necessary to maintain a healthy middle class.
Nevertheless, there are people who believe you cannot earn a billion dollars without bad behavior. I'd like to think that nobody really believes this and they have simply recognized it makes for good politics or some other self-serving purpose, but maybe I'm wrong.
Paul Graham recently responded to this argument with an essay called "How to Earn a Billion Dollars." With the experience of funding and investing in about 6,500 companies under his belt, he puts it very simply: The most common way to earn a billion dollars is to start a startup that many people like, and then have it grow very quickly for a period of time.
He provides some math:
If your revenues grow at 15% a month, how much more will you be making 5 years from now? To calculate that, we need to find 1.15 to the 60th power (since 5 years is 60 months). So go to Google again and this time type 1.15^60. The answer should be about 4384. Meaning in 5 years your startup will be making 4384 times as much. If you're currently making ten thousand a month, in five years you'll be making about 44 million a month, or 526 million a year. And at that point, if you own as much of the company as founders typically do, you will be a billionaire.
He then goes on to argue that a key founder trait is, in fact, the opposite of exploitation:
There are other ways to get rich than by starting startups. Some of those do require you to exploit people. But startups are the most common way to become really rich, and if you want to start a successful startup, the key is not exploitation but empathy. What do users really want? What could you do for them that would make their lives dramatically better? That kind of empathy is what we look for in founders, and what we cultivate in the ones we accept [at Y Combinator].
If you're interested, here's the full essay.