Google Maps is the last Google thing I rely really heavily on. I would love to be able to replace it with OSM but searching for places is far better on Google (admittedly, probably because they have more context for your search due to all the spying). I also rely a lot on Google reviews when I’m in a new place and just want to grab a coffee or a drink or something. Could probably use TripAdvisor for that though.
It helps if you can treat it as a hobby. My partner’s hobby is music, which is a perfectly sensible thing to do in one’s spare time. I always feel a bit weird when people ask me what I do in my own spare time and my answer is basically fixing my shit, then pushing it just hard enough that it breaks again.
To your question, the unfortunate reality is that those of us who care about privacy and software freedom are a small minority. Why overhaul your business model to suit us when they can continue to milk every other consumer out there who frankly doesn’t give a shit?
Phones are, of course, the worst of all for this. People do great work developing FOSS solutions but it is an uphill struggle and I worry that the hill is getting steeper.