There are 2 big issues with the Apple model:
1. Every 2 years they change the hardware, meaning that the developers have to create for the least advanced model or reduce the potential market for their games, and the new devices are very expensive and not so many can buy them.
2. The current prices of the apple store have spoiled the buyers, they are not willing to pay a good amount of money for their games as they have millions of simple options for 1 or 2 dollars, that means that even if the technology is available it would not make financial sense to spend a lot a in game because the price will have to raise and the people will not buy because is "too expensive"
Yes they may have the most advance technology in 2 or 3 years, but it will be both too expensive for gaming and too expensive to develop for compared with the possible selling price of the games and the constantly new potential market.