Probably their cloud offering and / or parts thereof, e.g. Firebase.
Also Google support is usually absent but when I actually get to talk to a human, they're great. Microsoft support is usually present but often seems explicitly designed to waste my time.
The one exception was a weird ECS error I kept getting that they couldn’t figure out. I realized later on that I hosed the permissions trying to do something cross account.
I’m sure they would have eventually figured that out.
(I work in GCP enterprise support)