How does this work out for open source delevopers: "Microsoft is providing a covenant not to sue open source developers for development or non-commercial distri

How does this work out for open source delevopers: "Microsoft is providing a covenant not to sue open source developers for development or non-commercial distribution of implementations of these protocols." Open source != non-commercial. RedHat, Novell, etc... can and do sell open source solutions that provide interoperability with Microsoft products. It seems to me that this is a move to make Microsoft protocols the de facto standard while still wielding the power to sue competitors who use them.