Gabe has known it his whole life, build a product that people want and they'll buy it. Seems more and more other big tech companies are trying to tell people what they want to buy, and people are hesitant about that.
The true meaning of "The Customer is Always Right". It's not referring to Karen trying to get 30 cents off shake n bake. It means if you make one product that you really believe in, but people don't want it, then you should build the thing they want.
Valve has done that with Steam. They built something that is easier to use than any alternative. They listen to their consumers and build products that people actually want and use. And it's turned into a cash cow.