I think we overestimate the demand for stable cryptocurrencies. Many stablecoins have come and gone, and then we have the pegged bitUSD and the USDT IOU, but people use them only for hedging. Most people are interested in crypto because of potential capital gains, not the tech per se. Maybe things could change if there was a cryptocurrency which was stable and appreciated constantly and predictably in value, if it was marketed to the masses as such.