I think it's more that Google's management/culture currently doesn't work.
Everyone I've ever met there subscribes to the ideology you can soft launch things and build over time. "It worked for Gmail" they say. But ultimately Gmail didn't ask people to shell out real money. And it was a long time ago. Consumer culture has changed, and a launching half finished messy products with no real support or direction really alienates people now.
That approach also only really applies if you can give a product away for nothing for a long time to build a userbase. Ruth Porat simply isn't going to let that happen, because Google's new fiscal discipline means she kills products if they don't have a clear path to profitability after three years.
And that's the real contradiction. There's nothing wrong with Porat's approach, but Google structurally is not set up to deliver products like that at all. And Google's culture did used to be successful, but can't work with what the Stock Market has made it very clear that Porat is to do (it's extremely clear stockholders like the three year requirement).
Ultimately you've got to look at the top of the company for the rot, because senior leadership do not seem to be pulling in the same direction, and as a result you end up with now... when was the last time Google launched a successful consumer product? The Nest Home Mini is probably the closest one, and I suspect that still hasn't made any actual profit with how many they give away.