1. The lack of regulations in the market has been a major challenge to most people who would like to invest in the sector. This mainly applies to people who are willing to n invest huge sum of cash.
2. a number of people also fear losing their coins though hacking. with the increase in number of hacking cases in various sites most investors are now slowing down their investments in the market.
3. the rapid change in technology in the crypto world. more sophisticated coins which are efficient and economical are now being offered in the market. a number of persons who were investing on btc in the past prefer using the same money investing in other coins.