Market decisions don’t do anything to prevent the tragedy of the commons - is the general answer. I have mixed opinions on this specific case, but I absolutely see how this could make things worse. If everyone starts releasing their own versions, and not offering the apps in the App Store anymore, than the people who prefer the walled garden (for which there are good reasons to want) then they lose that choice. It’s possible that doesn’t happen - and allowing people that don’t want the walled garden should also have that choice, but you can’t simply boil this complex question down to “free market”. It’s intellectually dishonest, at best.