Sucks, I agree, but this shouldn't be surprising. No one wants to open source their DRM. The title made me think they blocked you from creating a browser, which

Sucks, I agree, but this shouldn't be surprising. No one wants to open source their DRM. The title made me think they blocked you from creating a browser, which clearly isn't the case, unless you really feel that Widevine support is necessary for a browser these days (is it? I have no idea...)