People seem to forget that a good track record is never a guarantee that future games will be good. A company name also isn’t a guarantee either. Since studios are essentially a revolving door of talent.
Companies are ran by people and people can make mistakes or whatever that leads to a botched game. Not to mention the fact that the talent in game studios come and go so the people that made game A so great might not necessarily be the same team that works on game B which makes things more uncertain.
Bioware is another solid example. They had a really good track record for years until they dropped ME:A. Largely (afaik) because a lot of the talent behind their best games had moved on, leaving a new set of talent to work on ME:A and future games.
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.
What’s a few decimal places among friends, right?