I never said that. I only said you'd only have a point if it did.
Is it? Is it, really? Especially considering that a few months' subs is already yields more than the price of a box being sold? A player who remains subbed for a third of the expansion's total life already gave more money to Blizzard through subscriptions than the actual box' price. That is WoW's main profitability: subscriptions.and it is still main profit however the exp box sale
Which is why your "using your logic" argument does not work.