Government, awareness, accessibility.

Government - I mean regulations and maybe some promotions coming from them. I know that this might not happen because we don't expect that much support from the governments but I believe that this might be helpful in increasing the popularity of cryptocurrency.
Awareness - I mean increasing the number of advertisements (legit) online and in social media platforms. Many people are using the internet right now and many are using platforms like Facebook, Twitter. Might be hard though but still I believe that this will help.
Accessibility - this is the hardest one because not all people in the world have access to tools that can access cryptocurrency.