It depends on what you mean by ‘need’. If you mean they should for PR purposes, I probably agree.

If you are saying they should be required to by law, then no I disagree.

I don't suspect anyone here is demanding laws be written requiring every single player in any SaaS outage to make a public statement immediately following an event like this. That's an odd thing to state your preference on.

But, given that this incident unjustly caused real damages to another company, I am pretty certain that Google will be required to make some sort of response to this, and if it ends up in the courts, it will be public.