Unlike most other industries, tech companies are often very secretive about their product plans. Apple is the obvious example, but rivals like Google or Amazon are often even more closed-mouthed. And in parallel, there is often somewhat frantic speculation about what they’ll announce next.

Yet at the same time, these are often fairly simple companies with pretty predictable strategies.

Apple sells devices - circuit boards in boxes at a 30-50% gross margin. It makes them with a certain kind of experience, where it can add significant value in the software and hardware integration. It wants to control as much of the experience as is possible. It will not sell devices below a certain quality of experience just to hit a price point.

Amazon is an ecommerce platform - a warehouse with a search engine. As every new category goes online - as buyers and sellers become willing to buy and sell that product online - Amazon is there with the best logistics and the best selling platform. Meanwhile, it continually reinvests profits in infrastructure and new businesses to drive further growth - taking profit now is just wasted investment.

Google is a search engine and an advertising business, powered by a a decade-old machine learning engine that it feeds with as much data as possible, and it needs reach, in every sense - to feed the machine with data and to deliver search results (and advertising).

One could certainly quibble about how I’ve phrased these, and perhaps add or subtract things. Nor is any of it especially insightful. But that’s the point. These companies do actually tell you what they’re trying do to. Apple and Amazon in particular are very public and explicit about their strategies: Tim Cook (and Steve Jobs before him) and Jeff Bezos say variations of these things over and over again.

Yet somehow, people don’t hear them, and come up with ideas about what these companies will do that are totally at odds with their actual strategies. For example, Google wants Motorola to be a rival to Samsung. Apple will build a global pay TV network or a mobile operator, or an MVNO. Apple will make a mind-blowing new product every six months. Amazon will never be profitable. And so on, and so on.

In truth, though, the best way to understand these companies is to listen to what they say.