> I am happy my iPhone doesn't allow Meta to say "to use WhatsApp, you must install the MetaStore®, give it root and install it from there". I would not be happy with those restrictions on my desktop.

You fix that by making root access inconvenient enough that companies can't rely on the average random user having it enabled.

For example force you to wipe the device to unlock it as another person said in another comment. Or make it so that if you don't unlock it within 7 days of the device purchase and first boot, you cannot unlock it anymore.