The market would be accessible 24/7 from anywhere in the world, eliminating the risk of server downtime or IP restrictions that could occur with a centralized market.
Secondly, the market would be crypto compliant, allowing for the democratization of purchasing goods and services with a non-fiat currency.
points you mentioned are good, but privacy does not necessarily mean decentralization, and managing a decentralized market will be more difficult than a central market. We value privacy, but it is difficult to find a lot of interest and success in a decentralized market, as the user will need to download the software and manage it, and the process will be slower than central services, and risk Restrictions are lower, especially if all goods are legal.