You just forgot the development, that account for a big chunck of the cost.
Other than that, you're right
No I didn't! I clearly stated variable costs in selling each additional copy. Development costs are fixed costs, and once the game is developed you do not have to pay additional development costs for every single copy that is sold (think of it as a sunk cost).
e.g. it may take PD 5 years and $100 mln to develop GT5, but after that to sell copies of it (at $59) they only incur a couple of dollars of variable expenses (BR-D, packaging, shipping) to sell each incremental copy (lets say $4 for example), which would result in $55 going straight to the bottom line for each copy sold; which is pure profit once they get past the break-even point, and pay taxes.