Strange to use WhatsApp and "utilizing network effects" as part of your rhetoric. Haven't they been commonly used to harm users?
And to address your general argument, I don't think bad UX can be put in the same category of harm as monopolistic market manipulation. Of course you can have the most integrated, slickest, most clairvoyant apps if you're Google. They have the money, data and access for it. And you could justify walled gardens for this but not abuse of monopoly. It's unbelievably shortsighted to do so.
And to address your general argument, I don't think bad UX can be put in the same category of harm as monopolistic market manipulation. Of course you can have the most integrated, slickest, most clairvoyant apps if you're Google. They have the money, data and access for it. And you could justify walled gardens for this but not abuse of monopoly. It's unbelievably shortsighted to do so.