It won't be enough. Ordinary people won't invest in something they barerly know or they don't understand. Not everyone can understand how Bitcoin and Blockchain technology work. You can tell them that they are going to earn a lot of money but they are going to be mad at you and Bitcoin when it's going to decline (for example due to correction or recent events).
To invest in cryptocurrencies take gut. Most people are conservative. As Bitcoin becoming more popular and accessible, the fund from the "ordinary people" will come in.