Perfection isn't required. None of the systems we design are perfect. What's relevant is whether or not it's better for the users. In a direct way, for the ave

Perfection isn't required. None of the systems we design are perfect. What's relevant is whether or not it's better for the users. In a direct way, for the average user, I don't think you can reasonably argue that it's not. There are of course other issues with walled gardens, but security isn't one of them.