Open internet? With all their walled gardens and filter bubbles the idea is pretty laughable from Google.
Instead, like the US government, Google have developed mastery of "soft power" making it statistically-rare that they conduct Putin-like tactics. They know that heavyhanded tactics force heavyhanded responses and are actually a sign of weakness, not strength.
To be fair, if their business model came under _material_ pressure to be locked down, I'm not convinced they'd stay open.
As an example, look at Chrome vs adblockers - they could've shut them down years ago, but only acted when adblockers ate materially into the business and they were forced, again recognizing that they'll lose some users to Firefox and Brave.
https://www.engadget.com/2018-07-18-eu-commission-google-rec...
https://arstechnica.com/gadgets/2018/07/googles-iron-grip-on...
Obviously yes, Google is more open source than say apple, but clearly less than say red hat. That's not to say Google is "completely open source" but objectively it's "more" than some.
In terms of usability though Google is pretty open.
You can install any software on your android phone, whereas apple controls everything you do on ios.
You can access pretty much all Google services via an api, Facebook and twitter much less so.
In general, Google is more open in that sense.
In the sense of open source, Google is more open than some, but generally would not be considered an "open source company". Other than android there's not much offering there.