To change the world using bitcoin I think it's pretty difficult, but I think it's nothing is impossible, I dare and try to change the world with bitcoin by accepting payments using bitcoin, although this is already done but I add to the extent of the range.
With the current situation, Bitcoin is considered to be the most powerful in the economic market, but besides, there are still many difficulties that the virtual currency encountered as little known as well as possible risks. Developing markets and virtual currencies are also evolving, but if you change the world, then more money is needed to build.