How is the Mac app store any different from Ubuntu's? With both platforms, you can install other programs not in the store. Both of them automate the install an

How is the Mac app store any different from Ubuntu's? With both platforms, you can install other programs not in the store. Both of them automate the install and update process for applications. Both of them (now) allow you to pay for apps. I'm confused by people being upset with the mac app store when FOSS has been doing the same thing for years with package management software. Heck, Cydia is even based off of a *nix package manager. I don't want to call it fanboyism because I know you have other reasons for disliking their new app store but after seeing how well it works in Ubuntu, why could this possibly be a bad idea?