Call me cynical, but the first thing that springs to mind with these kind of opening up is the sign of a company no longer with the bullying power to not care a

Call me cynical, but the first thing that springs to mind with these kind of opening up is the sign of a company no longer with the bullying power to not care about being open. Rather than these changes occurring because a hierarchy of managers had a change of heart (look guys, they learned that open source is good!), a market share drop from 97% to 20% makes you humbled and reconsider your strategy, and products that don't yield returns are just sitting there and might as well be open sourced because it fosters good will in your company. IBM had to do it. Microsoft are doing it. Apple won't be doing it now that they're the big boys in town. Compare their Swift language which will remain proprietary for as long as Apple can get away with it, just as Microsoft has always done.