The bitcoin will be a lot bigger in that year plus there is also a good chance that the bitcoin is gonna have another halving in that year so that would be very sweet.
I also think that the bitcoin will be a lot more used by stores but also by users of course.
Possibility is there to reach half of the population to follow bitcoin. Even with this if lucky by the 2020 halving would happen and yield a big profit.
That means within 4 years we gotta reach out to those who dont know about it.
The only way I see this being done, is if it was a mandatory required thing that people see on a governement website - as a alternative note thats backed by their own country or something.