I really think that decentralized exchanges have not really perfected their technology yet, which is why centralized exchanges are still going to be the leaders of this market when it comes to the volume they manage, however as governments impose more heavy regulation to this industry and centralized exchanges are forced to comply the greater the chances decentralized exchanges become more and more popular, and they can finally begin to rival the volume of their centralized counterparts.
Before popular centralized exchanges, decentralized ones were known beforehand, such as decentralized exchanges in the past which were the most widely used, namely Etehrdelta with a simple user interface but made many contributions to other decentralized exchange developers.
Nowadays when centralized exchanges become the most widely used exchanges, customer trust is undermined by various kinds of hacking and misuse of customer funds. and the centralized exchange that is still standing strong today is Binance and I am also still using it, Binance is charging SAFU's current fund of $1 Billion for user asset security.