@FishyJoe
I concur wholeheartedly with your assessment. The virtual market for many massive titles basically wipes its ass with this sum. I am actually greatly disappointed by these figures. I have said it before, and I will say it again. Sony would have done better by using one of their subscription online games as a base.
Not only would it have arrived sooner, but the more competitive nature would have encouraged more time spent in the world, and thus more economic spending. I have always found that a balanced world based around competitive interaction is always a strong motivator for spending. Basically Home needs guns and swords to use, and something to kill to earn cred. Nothing inspires spending more then the fear that someone will be a lot better then you.
You need not even predicate the world on everyone making purchases. Make a system where you can earn rewards, and then the lazy or time constrained bastards are fast to buy their way up. Just like every other virtual world. The black market is based upon that need. Do that and Sony could make a real mint letting community members cheat their way up the ranks.