The point is not about Rpi, it was just an example. The powerful thing is that it's open source, very active project (check out https://github.com/diydrones/ard

The point is not about Rpi, it was just an example. The powerful thing is that it's open source, very active project (check out https://github.com/diydrones/ardupilot https://github.com/diydrones/ardupilot), and runs (among other things) on standard Linux distributions. 3DR has received over $40m of funding so far, it is not in any way just a hobbyist platform and is aggressively going after industry verticals like farming. They manufacture and sell their own drones but there is also a growing number of other manufacturers building drones using ardupilot. That's not to say that Airware won't have customers, since drones in general are a fast growing sector and there's plenty of room for different businesses. But I doubt it will be the de facto operating system for drones