As for Destiny not working,this is a related but different problem, stopkillinggames tries to tackle it, but both issues go hand in hand.
1. If we give up physical copies,we lose ownership,as simple as that
2. Server side components must be released by the publisher once they take offline a game, as long as that game was "sold" to the customer
So ownership is a very important component in this, don't make it sound absurd.
> How were they allowed to "sell" those titles in the first place then? Because it was never implied that access might be lost or restricted,it was very much sold to customers,not rented.
It was in EULA and ToS.