Maybe one more. Actually, it allows the programmers to put their apps on the store for free and allow thousands of beta testers and ideas for improving their product.
Once they get extremely popular, they can sell their product for anywhere from 99 cents to $14.99 and likely make quite a bit of money.
The other issue is that it isn't really 800,000 as much as 80,000 if each type of a certain type of app has ten listed. If you want an email app for Exchange, there are about 15, of which only one meets my needs. Touch screen keyboards allow the user about 25 to 30 choices, and you will need all of them to find one that you like.
