Oh, so you have no idea how games work

You can actually own games by buying DRM-free. A DRM-free installer can be backed up and used forever, even offline, which is better than relying on blockchain verification.

Games are also better by having no microtransactions than by being able to resell some fictional sword from a lootbox. If I want to have the best weapons in Skyrim I can just cheat it instead of paying anyone for it. There is no point or benefit in attaching monetary value to individual instances of fictional digital game objects, because in the system of the game that’s just some bits flipped, there aren’t any production costs.

The vast majority of companies out there would absolutely not support you actually owning a game or anything you buy in a game. They dont do it now, so why would they ever?

Even if blockchain was implemented, it would be implemented in a way the keeps the current status quo. Stuff would still be licensed and not yours.

Its very naive to expect otherwise.