For something like this to happen, you need mass adoption of Bitcoin worldwide, 4 years is too short. Gold is acknowledged by everyone to be valuable, it is something tangible that even people in their 80's or older can easily recognize. Bitcoin is a new generation thing and at the moment attracts only people that are technologically savvy. When we've reached a point where the oldest person on earth was born after Bitcoin was created, Bitcoin will have been universally assimilated. Of course we might not need to wait that long 
Many people already have a lot of cryptocurrency. Now we announce that crypto currency is like shares of the company "the future of Money", and start to trade them on the exchange for real dollars. Set the market price. She's growing up, because wanting to touch the money of the future a lot, and handed out for free 25 coins every 10 minutes to one, and still have to solve puzzles in General, it is easier to buy.