> game servers of the same game operated by different entities which have a real-mony related in-game economy
Are you thinking like poker and other traditional card games of chance and skill? I would think the only way a distributed, multi-entity-operated game would work is if the game had very well-established, static rules, with little to no chance of any changes to the rules occurring.
That's one of the major problems I see with NFTs for game assets. Games are ever evolving systems as issues of balance need to be tested and worked out. The higher the stakes (i.e. me competitive, more it involves real money), the more necessary it becomes that the games rules not be unfairly exploitable. A game like poker has the benefit of have ~150 - 200 years of play testing applied to it.
Also, nobody owns the game of poker. There are no licensing agreements to negotiate, no standards bodies purchase specifications from, no gate keeper. Anyone can make their own poker implementation and nobody can say a thing about it.
That is, except your local government. In the US, poker is treated differently than other gambling games, as it's considered a game of skill versus chance. But it's still regulated, just not as regulated as games of chance. So while the whole, global, CryptoPokerStars or whatever network couldn't be shut down, individual entities need to operate somewhere, and users need this entities to operate in jurisdictions they can trust to regulate the entities and make sure they aren't building in back doors and cheats like pocket card x-ray vision for company employees.