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.