The concern is that e.g. Facebook will use their might to push a less-privacy-respecting app store, or use the threat of that to get Apple to loosen privacy pro

The concern is that e.g. Facebook will use their might to push a less-privacy-respecting app store, or use the threat of that to get Apple to loosen privacy protections. Google will almost certainly promote Chrome the same way they have everywhere else, and gain a lot of traction mostly from users who just did it because Google said to and they clicked "OK", not because they actively want Chrome (same as how they took over the desktop). The main argument against the first concern seem to be "there aren't any successful alternative app stores on Android (seems there are in China, but OK, let's allow that) so it doesn't matter", but 1) iOS is a different market—far more lucrative per user, far more spending by users so the ecosystem is less ad-dependent, and with more restrictions on bad behavior by apps than Google imposes and 2) if that's true, why is it important to do this in the first place? The main argument against the latter is... well, I haven't seen anything even as good as the above. Just "yeah but I hate Safari because I'm a web app developer, so I don't care if Google owns the entire web as long as it means I can use Bluetooth from the web browser on iOS"