Because they are bound by U.S. law and #CloudAct was specifically designed to enforce #Cyberfacism in the sense that if a company operates or is incorporated in the USA, ALL their brances, subsidiaries amd parent companirs must comply with every U.S. law even if they don't transact with U.S. citizens/organizations/corporations and/or U.S. (occupied/annexed) soil...
I doubkt Google can do so unless they were to suicide their data-driven business...