Because you still can't sell/buy copies second hand, you don't own it, and if copyright is anything to go buy, you can't sell a burned copy either (and aren't suppose to share or loan either); Unless those $200,000 fine warnings at the beginning of VHS and DVD's are anything to go by, or the MIAA or MPAA (and Nintendo) lawsuits are anything to go by.
You literally have a receipt, and that is in the form of an email and a line in a database somewhere. They can ban you and deny you access to your account, and if they decide to go Poof because CDPR goes bankrupt or they decide they aren't making enough money, you got a wad of emails that say you once put money into a system with no guarantees of your ownership of diddly squat.
I'll repeat. 'YOU PAID FOR A LICENSE' (aka access). To us we buy games, not licenses. But that's not how the system sees it. And the moment you disagree with the updated terms or reality hits, you won't like it. Better hope you have everything downloaded that you actually care about.
This is still in the vein of 'You will own nothing, and you will be happy'. Just because they unshackle one of your limbs doesn't remove the shackle around your neck in this case. I suggest refusing to put anything into the system until they fix the ownership rights and the system. Otherwise there's only disappointment.