I agree that price volatility is a big hurdle for business addoption. The success of Stable coin projects ( such as Dai coin) will be very important into bringing cryptocurrency to SME and widespread use by merchants. Having say that, we should not forget that crypto-assets based on utility and storage value are made to grow against fiat currency and are not meant to be stable.
I see stable coin projects as a an important tool to grow mainstream adoption of crypto-currencies and crypto-assets.