But if I actually wanted to watch it I'd probably just grab a torrent instead.
I've done the same with some shows/series I own on DVD. I like having the discs, but for
actually watching, I just load up the DVD rips. Convenient to have all the episodes together on a hard drive. I don't have to swap discs after a few episodes. Not to mention the loading is much faster.
As for recordable media, I never even seen one in person. 25GB was so insignificant by the time it became widely accessible that I never saw the point.
When I used to go to brick-and-mortar stores, I saw the shrinkwrapped spools of recordable BD media on the shelves. But that's the closest I've ever come to seeing such in the wild, in person. I saw the 25GB ones, 50GB ones, and 100GB ones. The prices for the 25GB ones were already insane. And the spools didn't come with many discs. Sometimes there were just smaller packs of 5 discs or some sh1t like that, for ridiculous prices.
But, if I look back, having purchased all of four 4K BD titles in my life - yeah, I can see why it's dead.
I've never seen an Ultra HD 4K/HDR blu-ray. The few BDs I and friends own are all 1080p BDs. I do have one friend who has a giant movie collection of BDs, shelves upon shelves upon shelves, and the ones that don't fit are in the shelves are in a bunch of boxes. All 1080p BDs. He does not have a player than can run the 4K BDs, and he doesn't wanna grab his entire collection again.
Anyways, maybe you would have purchased more BDs if they weren't so d4mn expensive. The fault doesn't lie with us consumers. BDs, especially 4K ones, have been priced out of our reach. Hence why we go look for torrents and NZBs instead, and all the regular people just settle for sh1tty-@ss streaming.