[bobdole1234]

More likely, Google made their own mitigations, that they're keeping for their own competitive advantage.

They've had a lot more time with the problem than anyone else has, and billions of dollars to gain by solving it better than anyone else.

If they had a 15-30% loss of performance in their 3+GW of infrastructure, it would almost certainly cause a significant dip in their quarterly results, and they would want to warn the markets about that well in advance to soften the blow.