Not sure they would do that, I think this Mac App store is purely a tool to create a vertical revenue stream to sell to the vast existing iMac user base. I also think this will increase the amount of business applications 20 fold and possibly propel the MacBook into many businesses as IT dept's could use the App Store to add software to these Mac's and restrict any other content from workers. Far Less IT support required plus Apps would cost less than Microsoft software etc.