Pricing of games for console and pc are different because of licensing.
You have to pay sony, microsoft, or nintentdo for the right to use the game on their platform - that is passed on to the customer.
I don't know if they still do, but nintendo used to double dip. They charged developers for the right to make a game for their machine AND they charged them for using their proprietary media. That's why nintendo stayed on cartridges longer and why their dvd/blu ray drives don't use 'standard' disks. If it's standard, you can't charge a licensing fee.
It's the point of making a console - you get a cut of all games.