There's a dream of crypto not just being about currency but also distributed servers, or even MMORPGs (akin to Ready Player One), that are fully open source and

There's a dream of crypto not just being about currency but also distributed servers, or even MMORPGs (akin to Ready Player One), that are fully open source and decentralized -- enabled by technologies like Ethereum contracts or Hedera Hashgraph gossip protocol. I wonder what the first example with wide usage will be.