Got to say the fact that you thought someone leaving a 1 star review on a service you don't own, google, was worth you escalating it to a real person tells me these companies are doing the right thing. And shaming the CEOs when you made the choice to use their product is a bit silly and you come off as entitled, not righteous.
How do we or google know if he was disgruntled vs fired, how do we know if he didn't come in as a customer after he was fired and was treated like shit?
I'm imagining the situation where in your world where every business who got a bad review would be calling google. Imagine the number of bullshit calls they would get? And how much all of us would have to pay to support that?
If you want a real person to help you, pay for it. Plenty of companies are willing to sell you a service contract, even google, if you're willing to pay.
Vote with your dollars (even if the original poster preemptively tried to say why that won't work ... it's the ONLY thing that ever has in my experience)