IIRC this was in regards to Microsoft wanting to close access to the kernel, while also still wanting to use kernel-level APIs for their security suite - which does come down to anticompetitive practices.
However, if Microsoft were not to offer separate products that used kernel-level APIs then in theory it would not have this same issue, which I assume is how Apple gets away with it. But, I am not a lawyer so its just speculation on my part.
This is fantastic, congratulations!