Everything ?
Nope !
I mentioned an example in my earlier post. It was all "automatic". I did not set an entry in the Google calendar to remind me to watch the movie nor I asked the Assistant to check for any blockages in the highway. Do you think Siri can remind me without reminding Siri to remind me ?
BTW, I did a test last month to see how good are they. I asked Siri in my iPad and Google Assitant in my Moto the same question, "When is Arsenal playing" (I'm an Arsenal FC fan, don't kill me lol

). It was the pre-season and Siri responded by listing Arsenal's premier league fixtures for August (first few matches of the the new season). But, Google Assistant listed the upcoming pre-season matches. Siri missed it completely. Google Assistant, after fetching the match details asked me if its ok to set a reminder for the match too !!
But I agree with the last part of your post. For Google, we are the product. Same with Facebook.