We already have functional, audited, open source DEXes and have had them for years now.
Uniswap was the first well-done AMM (automated market maker) design. It's on version 3 now, and has traded more than $1.2 trillion in volume: https://uniswap.org/
FTX was primarily used for perpetuals trading, which is a type of leveraged derivative product. Popular decentralized perp products include:
GMX: https://gmx.io/#/
and Dydx: https://dydx.exchange/
Vitalik is certainly influential, and he did conceive of and invent the first smart contract blockchain, but he doesn't call the shots any more than Tim Berners-Lee controls the web.
Uniswap was the first well-done AMM (automated market maker) design. It's on version 3 now, and has traded more than $1.2 trillion in volume: https://uniswap.org/
The smart contracts are posted here: https://github.com/Uniswap/v3-core and can be viewed directly onchain as well: https://etherscan.io/address/0x68b3465833fb72a70ecdf485e0e4c...
FTX was primarily used for perpetuals trading, which is a type of leveraged derivative product. Popular decentralized perp products include: GMX: https://gmx.io/#/ and Dydx: https://dydx.exchange/
Vitalik is certainly influential, and he did conceive of and invent the first smart contract blockchain, but he doesn't call the shots any more than Tim Berners-Lee controls the web.