Comment by samatman

Because you have to pay to keep a traditional centralized database running, you have to trust the people running it, and when those people don't want to run it anymore, it's gone.

With a blockchain, you pay to modify it, so moving stuff around costs cybercoins, but even if no one wants to mint blocks anymore, you can still read your copy, which has your cards in it. And in that event, if you want to move stuff around, you still can, because anyone can set up a validator, even if they're the only one interested in keeping it going.

But I think this is reasonably unlikely to happen to any of the top blockchains on a reasonable timeframe. Whereas a game company shutting off its servers is virtually assured.