I think you need to think of these things in relative terms. It's probably more correct to phrase this "don't take big platform risks." IE, If you build on win

I think you need to think of these things in relative terms. It's probably more correct to phrase this "don't take big platform risks." IE, If you build on windows or linux you take the risk of either failing. But you do at least know that they're goal is to be a platform for developers to build on. The risk of sudden changes in the T&Cs turning your business on its head are small, compared to the risk on Facebook, iOS or Twitter for example. Of course everything is built on other things. Even if the software and even hardware is independent, you're stil dependent on the economy. You need copper for your circuits and oil for your plastics and anyone know how to make tools for making tools for making drilling tools? How am I supposed to get fuel without tools for making drilling equipment? Hold on, I'll figure this out I made a flint axe...