I see bitcoin becoming an institutional coin in the nearest future. institutions are beginning to buy bitcoins in billions of dollars. this will automatically reduce the amount of bitcoin in circulation thereby forcing up bitcoin price.
I wouldn''t categorically call it "institutional coin", even average joe can still purchase it in small units, hold on it for a long time and wait for the perfect time to sell. Bitcoin is also hedge against inflation, and the basic economic principle is apply: law of supply and demand, less supply more demand = increase in price.