In Rust we have cargo vet, where we share these audits and use them in an automated fashion. Companies like Google and Mozilla contribute
their audits.
Nuget, Powershell gallery, the marketplaces for VSCode/VS/AZDo and the Microsoft Store too. Probably another twenty.
They collect package managers like funko pops.
I'm not quite sure about the goal. Maybe some more C# dev kit style rug-pulls where the ecosystem is nominally open-source but MS own the development and distribution so nobody would bother to compete.
I took those acquisitions and a few others like LinkedIn and all the visual studio versions as a sign that Microsoft is trying to own the software engineer career as a domain.