OpenSea CEO admitted that NFTs lack liquidity and flexibility, leading traders towards meme coins.Liquid NFT Marketplace addresses NFT liquidity issues by locking 50% of mint value and using fees to grow NFT value over time.OpenSea charges a 2.5% transaction fee on each NFT sale.Meme coins are being added to OpenSea 2 for their liquidity and fast trading features that NFTs lacked.