Biggest DeFi applications or dapps that trade NFTs based on monthly protocol revenue from October 2020 up to December 2021 (in million U.S. dollars)

With a revenue generation of over *** million U.S. dollars in August 2021, videogame Axie Infinity is an example of how DeFi protocols increasingly generate more money. The protocol behind OpenSea - a popular NFT trading platform - made over ten times more protocol revenue in August 2021 than it did one month before. What this means, is that the protocol is essentially creating more revenue "for itself". Protocol revenue - fees taken directly by the protocol and its token owners - is different from supply-side revenue - revenue given to those who use the protocol - and is believed to make up around ** percent of the total revenue in the DeFi market.