 &gt; Apple has not pulled off a successful App Store concept for MacOS yet<p>They really did, for the first year or two of the Mac App Store&#x27;s existence. It was great. All of the &quot;$10 utility apps&quot; would be there <i>today</i> if not for Sandboxing.<p>Maybe this wouldn&#x27;t have included the apps where the 30% or poor support for upgrades&#x2F;subscriptions would really impact sales (Adobe, Microsoft, perhaps, interestingly, Sketch...), but sandboxing is the only outstanding issue that <i>prevents you from shipping</i> an app to the Mac App Store.