Speaking at the “Il Cinema in Piazza” Film Festival in Italy (translated by Genki), the Death Stranding and Metal Gear director said that at least with digital games, users have the data on their systems, something that isn’t the case with cloud gaming.
“Since production is ending in 2028, this is about video games, but I grew up with physical media, so I find it really sad,” he said. “Currently, I’ve been buying up a lot of Blu-rays, such as various movies, and CDs too.
“The situation is different for games [than movies], as they are downloaded to the hard drive, that means the game data remains on your own hardware. However, if things shift to streaming in the future, that won’t be the case anymore.”
Sorry to kind of ignore your question, but I think it misses the point.
Even with only the partial game data on the disc, the disc still held the rights to the game. Therefore, the rights were transferrable. That is to say, you could still sell your disc and it would have value to the next owner.
When you are forced to buy the game directly from the PlayStation store, your game license is no longer transferable. You can’t sell your old games, and you can’t buy used games from someone else.