I have a HomePod and not an alexa or Google device because Apple has shown it cares about privacy. That's user-centric. Sure, we could be incredibly cynical in saying that "well because you buy it then it is actually Apple-centric", but they clearly care about privacy.
Google to me is entirely Google-centric, which means harvesting as much data about me as possible to sell to advertisers.
I'm fine with Apple's walled garden. It works really, really well. People love iPhones for more than just marketing and status. They're excellent phones. And a not-insignificant piece of that experience is an ecosystem fits together nicely, with central control. Infinite choice isn't better for most people.