"So Americans care about some simple small game and don't care about killing people all over this planet?"
Yet again, we hit page four and the off-topic country-bashing starts. Shut up and go away troll.
As to music and games being sold over the net, music might, but games? High quality games? Takes money to make games, a few million dollars, usually. Unless you're an experienced developer, you're going to need a producer fronting the money- and besides, then you don't need to worry about advertising costs, packaging, product delivery, etc, since the producer pays and takes care of that (assuming they want the product they've got a vested interest in to sell.)