Obviously you didn't read the fact that when the console launched they were actually losing money on the hardware at the price point they had it at. As the console gets older the price of the manufacturing will go down, and when the company is able to do so, they will pass it on to the consumer in the form of a price drop.
Troll...? Seriously was a waste of a post.
Most companies have a policy that if the price changes within a certain amount of days after your purchase then they will pay you the difference.