Making it hard to change the rules is one of the value propositions of decentralized blockchains. Hard forks are pretty rare and when do happen, they are contentious the original chain survives (for example Ethereum Classic).
Compare this to a centralized entity like Blizzard changing rules in World of Warcraft. Wouldn't you agree that it's much much easier for Blizzard to change the rules in their game, than to change the rules of a blockchain by hard forking?
Compare this to a centralized entity like Blizzard changing rules in World of Warcraft. Wouldn't you agree that it's much much easier for Blizzard to change the rules in their game, than to change the rules of a blockchain by hard forking?