I’d say a big part of that is that no major player in the video game industry is still interested in investing long-term into building something. Games like FFXIV started out with huge losses, and they kept with it. Any worthwhile MMO is going to have falterings like that at some point in its life, and they’d need investors that can actually stay calm about that. In today’s markets, where they expect development time to be something like 1-2 years for something that must follow every monetizing trend (battle pass, loot boxes, etc) it’s extremely unlikely. It’s probably not consumer expectations making it impossible.