He's done great good: for himself, stuffing his wallet. He's played the game well, squirrelling his way to the top, and siphoning off his fill.
For all the Alphabet stuff, and hiring the smartest engineers on the planet, I've yet to hear of a single Google breakthrough beyond their search. They're still just ad salesmen.
Only other useful things they've done that most people would be aware of is refining Microsoft's email/office software into the SaaS age, and making a popular map app. That's great, but no breakthrough.
Now OpenAI's going to kneecap them. Who searches for lists of potential sources of answers when ChatGPT just gives you them? They're fucked.