The only two games I've invested that much money into are Everquest and WoW, because of the monthly fees. Paid on an installment plan, maybe I'd pay $120, but otherwise no. I refuse to buy more than one game system at a time because I don't want to dump the money into it, so why would I pay that much for a single piece of software?
I'd have to *REALLY* want a game to pay that much for it, which means it would have to be a sequel to something I've already played and loved. How many new series do you think they would actually make if that were the case? (Answer: even fewer than now, if that's possible.)