The beauty of the internet is it allows companies of all sizes to compete globally. When executed effectively, an international e-commerce website can lead to a larger customer base and a substantial, sustainable profit margin every year.
The AppStore is crowded with apps, but most of them are not successful. The days are over where you can wait for success the moment your app hits the AppStore. You can still make a lot of money with a successful app, but it will require more work.