Microsoft? Maybe. But Netflix seems to have been working with both Microsoft and Google, and I think Apple, too, to make this work. So maybe they aren't just an idle player, and they may have been the ones trying to get the other major companies to do this for them (and others).
Agreed. Surely Netflix doesn't care ultimately, but studios are only going to sign contracts with them if they have things in place to guarantee it's all secure, i.e. DRM. There's surely no way that Netflix would fight for this, and then LOVEFiLM wouldn't use it as well?