Why did Warhammer age of reckoning game population drop

Because the game done for profit, you have to pay big money for you to move on, but I would say that just because it is simply a commercial game many players rather tries not to waste time and quickly get to the maximum level, which is why it difficult to enjoy.
Additionally, if you are playing the game for fun without paying royalties, the game does not have much funds to entice players to ever to pay for it, the maximum level of ten and almost no better things and equipment that would be put to use .. very sad