I have a strong feeling that price fluctuation is making people to stay away from bitcoin as they have fear of loosing money and that is the reason they are not investing into it.
They are afraid of something else it is the lack of knowledge that scares them. Bitcoin might be a little hard to learn but while using it and asking.
I highly doubt this, since it has been made easier when more players in the market have entered and have more variety available on who to go with. There are over 40 different wallets available as an app for your mobile and it is easy to start using it. So lack of knowledge is not an excuse anymore. If you can use a phone and of course use it's apps, then you can use bitcoin. Nothing is stopping anyone from getting into it now.