Bitcoin is the future, many people will accept it as a medium of exchange. From that itself, the value of bitcoin will appreciate, what more in the future?
There is a saying "if you can't beat them join them". I think those who will oppose in the future with bitcoin, will just adapt with the bitcoin system. Same goes with many companies it will adapt and join to the bitcoin system.
It may be a medium of exchange, or it can maintain its properties just like now. The next time in bitcoin will be more amazing for us. I hear all the people are talking about bitcoin even they don't have any. This is also good.