All asset platforms should have DEX. But that DEx is only for their asset. Like Etehreum have DEX for their tokens. XCP counterparty have DEX for their tokens. Same as you notices in Waves and Bitshares. DEX should be and is part of their wallet.


But real DEX is when exchange also includes fiat. When exchange includes different blockhains that have technically little in common.  BisQ is real DEX.