Do you really think everyone relies on Google that much? I don’t have some vendetta against Google but I don’t count on their stuff much. Besides Gmail which I havent given the time to at least partially migrate from (only because I have multiple emails and would rather they be with multiple providers), I use the calendar for syncing and YouTube. Neither gmail nor calendars is something I need from google. It’s just I’ve never changed.
I’m sure the majority of people do rely on Google quite a bit. But not everyone.