Well, there's the ultra-hd bluray that seems to be trucking along fine, and regular bluray is still chugging along well enough for studios to be releasing them.

But, they'll get phased out either right beetle before they start failing to make profit, and/or when the various entities of the movie industry figure out a way to force people into their streaming services. Now, I don't see them making laws happen that require us to subscribe, but it is possible that they could manage to shut down enough alternatives that a majority of people that are convinced they need access to shows and movies to get through life that there's no other way. At which point, the final nail would be eradicating new physical media.

But, as long as they can make profit from both physical and streamed media, they'll keep milking them both.