...where "we" is limited to people in Western democracies with governments that don't oppress their citizens. People in countries that have less enlightened governments have often had a pretty bad time after posting things online in ways that security services have been able to monitor, track, and use as the basis for imprisonment and worse.
I don't believe that Google is passing data about people to oppressive regimes, but there are damn good reasons why people think privacy is important for all internet users.
The advertisers demanded but it lessens the experience ij many ways.
Cellphone companies have known your "exact" location for the last 20 years. There is a lot less oversight or scruples in the engineering teams of providers (that I have worked at) then I have seen at Google and the likes.
Nobody (but a couple of spies, smart crooks & prewarned govermental types) take any measures to hide from them, or complain about this information being available.
Luckily for us, telecom companies are not that smart|agressive when it comes to finding new revenue streams. Be it based on your (phone's) location or their excellent position to offer verified identity services, since they have a payment relation with all their customers.
See: Verizon buying up ad networks, CarrierIQ, etc
Or if it's worth making cool new features that preserve the user's privacy. I don't see that there is an inherent tradeoff.
Protecting the user is (in most of the cases) fighting ads.
Tell that to people who have been doxxed. Or people who have had their stalkers find them. Or people who have been arrested by oppressive governments...
The list goes on
That turned out to be significantly less dangerous than we anticipated.
What if our movements are similar? Everyone knows where you work and where your home.
Whatever the case, the next few years will decide if we value privacy or endless features.