This makes me so mad, Google is not the first i've seen doing this (AWS, Upwork, Twilio) - and the cheek to say precisely nothing about why. If you're a buyer of cloud services right, i bet old-school on-prem is looking as tempting as an actress to a teenager rn.
Every regulated firm running on GCP is going to spend Monday explaining to their board how their resilience plan accounts for a hyperscaler that operates this opaquely. The compliance paperwork is the easy bit - the honest answer is we trusted that a hyperscaler would behave like a utility and they didn't.
So yes - they owe a statement. The whole point of paying hyperscaler prices is the assumption you won't wake up suspended with no explanation.