Refunding the sale price is still theft.
What did you lose in this theft?
Is there really nothing in your home right now you would be sad if someone took and just gave you the money you paid for it?
Even a digital copy of a movie may not be so easy to replace on the services I have access to.
Stores are not allowed to go home to people and take back the stuff they sold, even if they refund the price. Neither should a company that advertise “pay this price and own this movie” rather than “pay this price and rent it for an indeterminate time”.
Except when they aren’t. Especially if located outside the US, it is far from obvious that a given movie is available through another service.