I think people have a particular fear before investing in bitcoin. I think the biggest worry of many investors before deciding to invest in bitcoin is unstable profit and the big threat from the hacker. So few investors agreed to take the risk to make a profit from bitcoin.
Not all investors are brave in terms of investing. Some investor's are not decided to invest in bitcoin cause the value is unstable they cannot take the risk and the big threat from the hacker they have fear because of this. But some investors are willing to earn in bitcoin no matter what happen they are accepted all the risk to make from there investment.