I mean, how or why would they? You release something; it makes 90% of its lifetime revenue in year 1; if you continue working on it for 6 more years, you're out of business.
As for the ownership or survivability of in-game virtual goods -- I think the author is referring to Valve's hats in Team Fortress 2? -- to me it's nonsensical to complain that you don't own it outside of the game. It only has relevance in the game, and it would be silly to ask the company to develop some external service just for owning your object. The ones that have tried that kind of thing just fail and look silly. But wait! Along come NFTs, with potential permanent ownership... but gamers despise that idea, too.
Gamers are just eternally grumpy and conservative about changes and progress. (I say that as a grumpy gamer, myself.)