Mass adoption is just a dream however huge price increase is something that bitcoin can conquer, remember that this coin worth few cents and now worth almost $1000 so sky's the limit for the price. About the adoption, I have my doubts about where we can go.
Your high price will not last without mass adoption. Mass adoption may not happen overnight but it is not impossible. A few years ago bitcoin is nothing, noted as a scam. But now, major companies are taking notice of bitcoin. That is huge development and mass adoption is not far to follow.