I dispute that. Google Docs/Drive/Mail are supported by enterprise subscriptions. Android Auto is also a commercial product that can live off license fees. Fi/Fiber/Pay/Waymo are also not free services, and can survive on their own.
Free GMail/Forms/Groups/Translate can probably survive off ad revenue that they can get from third parties. They are pretty trivial expenses at this point.
Android and Chrome are the main projects at risk.