Up until 4 years ago, there was no practical way to have a money exchange without a middleman. Today we have all the Uniswap-style decentralized exchange who ma

Up until 4 years ago, there was no practical way to have a money exchange without a middleman. Today we have all the Uniswap-style decentralized exchange who makes more transaction volume than all of the other centralized exchanges, and do it without wash trading, and no operator can steal or embezzle the funds. To get this, all it was needed was to have a protocol, namely the Automatic Market Maker system popularized by Uniswap. Protocol is what we need, not platforms. One protocol being developed to deal with conflict resolution is https://kleros.io https://kleros.io. A decentralized car sharing company could work initially just like a regular car-rental company, by having the renter providing an deposit to cover for damages and refunded when the vehicle is returned in acceptable conditions. In case of small disputes, a pre-arranged third party works as a arbiter. And in the case where there are some serious problems, actual courts and the "traditional" institutions should be there to execute their role.