This will never be used and i'll tell you why.
1) There will be a recurring cost and shipments involved in bringing the DVDS to each store, for as many times as needed to supply 1000's of rentals.
2) Think about the stock (space) which would be required to store multiple (hundreds of copies) of each DVD in the store, even for the odd titles so they can hold to their motto "We always have it or it is free"
3) Think about the amount of money the stores will lose in late fees because of this.
Joe