Smart idea, don't know how it will affect the quality of games moving forward as it seems that titles that would sell for lets say $40 a piece will now be included in a bundle and probably get a fee out of that $10 a month.
On the other hand yes subscription/rent is the way to move forward. You lease a car, you subscribe to netflix, prime, hbo, now you subscribe to gaming libraries etc at some point will happen with food if its not there yet.