This is the answer, Wiz already has a foot in the door / running contracts with huge cloud consumers, but not all of them are using Google's cloud. I wonder if Google tries to earn more money off of competing cloud platforms by offering services like this.
Revenue from Wiz's customers will not make back $32 billion dollars even in 30 years.
Wiz's technology is irrelevant. I think Google already scans for vulnerabilities and misconfigurations. And can build similar for low millions of dollars.