Earnings growth is great and all, but you can make a ton of money on companies that don't grow earnings, whether you're a full or a partial owner.
Hell, you can make a lot of money on companies that go bankrupt. Buy, and hold, and never sell, and experience a 100% loss on the share value (they go to 0), and you can still come out fine.
http://www.joshuakennon.com/eastman-kodak-example/
It's a great case study to learn from, and see the fallacy of the "what if it goes bankrupt."
To your point, there's a lot of things to evaluate when looking at a company, earnings growth being just one.
That was an awesome read, thank you for that.
One odd thing that always strikes me with those 'go back X years and invest $Y into stock Z" is that it is typically picking out a blue chip stock, and then going back in history to when they were a just one out of hundreds of generally healthy looking companies. Then tracking growths in business, dividends, and spin offs all of which add to the final value. The problem I have is that you could just as easily 30 years ago have picked up a company that gives no dividend, or was already on its way out of the market, and your investment suffers, hilariously..
Like the article said, if you don't have an interest in reviewing quarterly earnings and keeping up with the company then it really was just gambling / speculating.
I also agree with the article completely that indices are the way to go to minimize singular risks.
We all want to pretend being the next Warren Buffet, but one reason he's so good, is because everyone else is just that bad at what he does (analyzing a company).