One of the things that got me on this was the admission that Grand Turismo 4's costs are up to 60 million Dollars.
Do you mean Gran Turismo 5? Sometimes, console developers will fund games that have a extremely low chance of turning out a profit for the sake of showing the fullest potiental of the gaming hardware and hopefully attract more customers. Another reason the company might do this is with the hopes that with the leaps and bounds of innovation made in one that installment, the next installments will be generally cheaper to produce than normal as a great deal of the grunt work has been done already & hopefully the investment will be found profitable sometime down the road.