The Perfect Gamer Experience, The Best Ecosystem and Multi-platforms Integration

Will MSFT make this possible to us "Xbox Live Gold Subscribers"? Who does like to play Xbox 360, WP8 and PC games.

If I purchase Xbox 360 game, I would be able to use or eligible to download the same game in my PC and WP without paying extra or at least half of the full version cost.

The game achievements and the progresses made are integrated between all devices as long as I am using the same Xbox Live account. For example; If I complete level 2 in Xbox 360, I would be able to continue playing where I stopped in my PC.

What is your thought?