Binance initiates it`s own DEX and will swallow big share from DEX market..
Besides, I doubt that Binance will somehow help to it`s DEX competitor like NIX.
But who knows..
Lol. NIX can help Binance's DEX with privacy and liquidity through the DEX manager. NIX is not a competitor to any DEX. NIX helps empower them! Give the Whitepaper a read. It is all explained.