defi is a new market concept. as for me, it's more credible and transparent concept than IEO/ICO. it shows that cryptomarket is becoming more sustainable and healthy than 3 years ago. besides, if you research a market you can really see that a lot of nice dex projects are rising and they have profitable defi tokens
by the way i see most of valued dex-es are developed basically with eth blockchain. and i see nice projects based on Curve exchange also.
besides i've found an interesting stablecoin exchange based on Curve - xsigma, do u know them?