Yeah, look at the insanity in Chrome. It is open source but that's just the lip service. I want Google nowhere near my home gadgets. It might play a docile role and then eventually devour the entire project with funds/influence.
Apparently, most people are happy enough with Chrome. If not, it would be relatively easy for a competitor to enter the market with a more attractive offering. And that's only because Chrome (and Firefox) are open source.
I'm sure there are many valid reasons to be critical of Google's business ethics, but keeping an important project like this almost entirely open source surely is not one of them.
Android, on the other hand, is a different case, with Google moving more and more basic functionality into the proprietary Play Services and proprietary apps.
Amazon is influential enough in home automation that it won't happen. Alexa is the most likely home assistant to respond in American homes.
Apple is a long ways behind, but they have enough stubbornness and power to keep their influence in the decision making as well.
