Or if they just release the Mono runtime under MIT (Mono requires all VM contributions to be licensed to them under MIT, they then turn around and release it un

Or if they just release the Mono runtime under MIT (Mono requires all VM contributions to be licensed to them under MIT, they then turn around and release it under LGPLv2 and a commercial license - so it's legally doable without any effort). Microsoft's product strategy is getting .Net everywhere for free, making money on services and tooling - they don't need commercial Xamarin around to make their strategy work.