On a large scale like this — not a small open-source project by good-willed individuals — “opening” something is almost always an effort to commoditize it, leveling the playing field as much as possible and marginalizing competitive advantages that others might have had.
Nobody “opens” the parts of their business that make them money, maintain barriers to competitive entry, or otherwise provides significant competitive advantages. That’s why Android’s basic infrastructure is “open”, but all of Google’s important applications and services for it aren’t — Google doesn’t care about the platform and doesn’t want it to matter.
marco. It's interesting that open-source is now considered a weapon against other companies. Though I guess it was always intended to be such a weapon...