To anyone who is interested in the games industry...

I suggest you read this article. If you're wondering why there are so many "casual games," practically all of which are horribly dumbed down and crappy examples of games, read it. If you want to know why Nintendo is dominating the market, read it. If you wonder about Nintendo's business plan, read it. If you wonder why so many games are clones of each other, read it. Just read it. You will not be disappointed.