You don't hear as much about them, but Microsoft has very similar pressure groups that have been involved in complaints about Azure and GitHub usage by the military and ICE. A lot of very similar stories are in HN if you search.
It may not be that Google's pressure groups are more successful, but that the government actually has more interests in Microsoft's products and support agreements.
(HoloLens is on v2 and is expected to have long term support. Google Glass has been cancelled twice, and you claim it is rebranded now, but my search just now turns up Google Lens as just a phone app with no hardware initiative. Even if there is a hardware initiative with that brand name, that's still two cancellations and a confusing brand name change too many for most government contracts to trust. There are similar complaints about GCP versus Azure out there, though I'll leave that as an exercise for the reader.)