It’s still yours to keep forever. They didn’t promise to keep it for you forever.

I mean, yeah? If they give it to you DRM free, then it is solely your problem to make sure you actually keep it forever.

No one can guarantee to hold your media forever. Not even you can.
Accept every attempt as it is and be thankful someone tried.

If I bought a game and I lose access, the publisher should either be required to give me access or refund my money.