[kryptk]

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.

[giantrobot]

Again, assets on a blockchain only matter if someone cares about that blockchain. If I only support blockchain B, it doesn't matter how many assets you have on blockchain A as I will never support it. If I'm invested in blockchain B there's little reason to add to my expenses to support other blockchains.

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.

[acdha]

This only works if the developers choose to spend time implementing an import/export system. That’s a lot of work and since they need to have an arrangement for that anyway, why wouldn’t they use their existing billing system to retain control of it and a greater share of the profits?