You can book either Uber or even Lyft from Google Maps (assuming they are available in your location). Once the ride starts, you can follow progress from either Google Maps or the Uber app. You can still book and track the whole thing from the Uber app, of course.

I prefer GM because it has all my bookmarks, it doesn't download the same map tiles again, etc. Until recently, it was quite annoying, because you were trapped in "Uber mode" during a ride. As of a few months ago, you can go back to the base map, start new searches, look up transit directions, etc. and later return to your ride's status.

Full disclosure: I prefer to walk and public transport, so I generally use those when I’m late. This means that I rarely use any and I tend to pick whichever seems to work seamlessly, namely the one not asking me for my credit card number, asking to confirm my phone number with a SMS handshake that takes five minutes, etc. I remember navigating between several options including Addison Lee (a local equivalent in London), local taxis if they have an app (in Stockholm: great service, inexplicably expensive).

That does mean that Google Maps will win and its default option too. I suspect that the way they display services, notably prices and availability will have a dramatic impact too: at the moment, it’s a band. It’s all too easy to show a cheap low price for instance and I suspect that Google Maps might want to argue that they should review estimates and compare them to actual charges to enforce consistent labelling. Same for availability: you can say a car will be there in three minutes, but have that change to five once you clic, etc.

Overall, it does look like an anti-trust issue. I guess, in that case, a China-Wall between Google Maps and Waymo, transparent ranking process, etc. would be necessary. I can’t imagine not having access to either a mapping service, or the convenience of comparing public transport with ride-hailing.

I’ve been an advocate for auditing a lot of algorithms by publicly-appointed experts for a while now. You need a good understanding of machine learning to audit the political impacts of Facebook News Feed and the Call to Vote button, for instance. Not all countries can appoint their expert though, so we might need to have smaller countries agree to trust the expert from larger nation groups.

Are you asking whether you have to use Uber? It gives you a list of providers.

If you're asking whether you can ask maps to switch into the Uber app, I'm not sure there is a lot of value (you can pop open the app and your ride appears there too). Uber exposed developer APIs presumedly for this reason. Embedding the UX lowers friction and tightens up the user funnel.

I suppose if they did that, that they would make an Uber Maps app.

In the mobile app, request directions of a location and there's a rideshare icon (a person holding a suitcase with their other hand hailing a cab). For me it's between the walking & bicycling options. You're presented with several options from both Uber & Lyft, each with a price range.