It just feels really cynical to make everything about motivations and incentives. There are plenty of great projects that Google has produced that provide great external value without an interesting internal plan beyond using it to make products better. Golang, flutter, bazel, Gerrit, etc. I understand there are also examples where it uses it with some other intentions, such as the case of tensorflow or kubernetes, but I'm not really sure why one would think fuchsia is closer to those than it is to the former set.
It's certainly a bit cynical to view for-profit companies as being solely profit motivated, but I don't think it's _that_ cynical. To me, it almost seems a bit naive to assume that a company like Google would be doing something for purely altruistic motives in the absence of any evidence one way or another. I'm not a subscriber to Friedman's view that corporations are _required_ to maximize profits for their shareholders, but I do think that they all inevitably end up there in the absence of mitigating factors.
Google's goal is to make good products. That will enable making money. A positive externality of trying to create a good product is creating technologies such as fuchsia. I don't think there is more to it beyond that. If it's more complicated than that, that would probably be news to most people working on Fuchsia.
