Liquidity providers deposit funds into SushiSwap and NFTs into vaults and receive redemption and minting fees from users (supply-side fees).

NFTX is a non-custodial NFT marketplace protocol built on Ethereum. NFTX was founded by Alex Gausman and launched in 2021.

NFTX tokenholders own and govern the protocol. They currently take a cut of the redemption and minting fees (in the absence of liquidity providers) paid by users (revenue). NFTX's investors include Robot Ventures, etc.