A game that exists in two blockchains would offer a way to bridge assets between them, or succeeded by one that does.
In fact the opposite is starting to be true: assets from game A being usable in game B.
In fact the opposite is starting to be true: assets from game A being usable in game B.
Even in the most practical terms, if I sell in game assets they're ones I made for my game. I know they work with my game. Why would I put in extra effort to import third party assets I don't make money on? If your assets are in a proprietary format I'd need to spend more money licensing some importer or build my own.