In addition of the stockpile of facts I said, let's not mention that when people understand (usually within a week) they gotta spend 1000-2000 dollars to reach the players who are maxed out, they insta-leave because you should never invest more than $50-100 in a game for one year (cuz afterall it remain virtual goods).
All the PH guys from the merge left iRohan. You had bunch of them, and they one by one left the game to play on pservers because they couldn't afford anything due to their low monthly salary.