For many people crypto is still something they find new and unreliable. Many of them don't have enough trust and think this is just another potential scam. Others find it too risky and don't like such investment because of high volatility.
Something that I can see as solution is better promotion of cryptocurrencies as well as education of people. On the other side only the brave will use the opportunity cryptocurrencies give them and that will be rewarded with profit and new chances for better and different life.