This has been the call ever since. Bitcoin is decentralized. It is just logical that exchanges should also be decentralized. Decentralization is the battle cry of Bitcoin and of cryptocurrency in general. We already have a few decentralized exchanges but it seems the majority of the volume is still focused on centralized exchanges. Perhaps the efficiency in trading is in decentralized exchanges. I hope DEXs would be able to compete so that traders would move over to them.