A lot of Google's products could be completely sustainable businesses on their own, but of course they couldn't offer them for free for personal use as they do now. Plenty of companies pay for Google Workspace, so that surely wouldn't die. Android could be spun out and returned to a more open development model, with phone manufacturers contributing money and developer time to the project instead of mostly freeloading from Gooogle. Google Cloud is supposedly profitable, (although I don't get why anyone would want to pay for that...).
Really the only things that I'd worry about are Google Search, Maps and Gmail, as they don't seem like they would work if they weren't free to use and I don't see a way to monetize them. It might be interesting to also put Google Maps under the same umbrella as Android, so it could be jointly owned by the phone manufacturers who ultimately benefit from its existence. Gmail could surely survive for quite a few years by optimizing their costs like crazy and burning Workspace profits.
The rest of the things you listed have existing competition, so it could probably survive and if not, alternatives exist.
Really the only things that I'd worry about are Google Search, Maps and Gmail, as they don't seem like they would work if they weren't free to use and I don't see a way to monetize them. It might be interesting to also put Google Maps under the same umbrella as Android, so it could be jointly owned by the phone manufacturers who ultimately benefit from its existence. Gmail could surely survive for quite a few years by optimizing their costs like crazy and burning Workspace profits.
The rest of the things you listed have existing competition, so it could probably survive and if not, alternatives exist.