That’s not the argument you think it is. Chrome isn’t on the Mac App Store because it’s not compatible with Apple’s walled garden. So while you might need to go to a separate page to get Chrome on Mac, it can’t exist at all on iOS, and would have never had the opportunity to thrive in the first place if macOS originally started out as locked down as iOS.
I can personally guarantee you that people download Chrome because they want the sync, the UI, they have to in order to access work documents, etc. Not because it's running blink.