Its a pretty simple marleting strategy when you think about it.
"We'll give you a product which is small, light, fast, user freindly, has very useful features, is stable, can run on just about any kind of computer and will support all the latest in internet standards. All this will cost you is $30"
Now im sorry but $30 is a pretty paltry sum. Most home users wouldnt think twice about spending much more than that on a game that they'll probably get bored of within a month. Wheras they'll probably be using the same browser for years.
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The revelation beaten on a skin drum...