Why don't they choose to invest in asset management such as the ones on BitOffer, Huobi Global, and Binane?
Like, BitOffer Quantitative Fund guarantees the original investment and interest. Trading is not the necessary stuff in the investment plan.
Now, as Bitcoin has been wider accepted, its finance ecosystem is developed. It is kind of like asset custody.
Investing in Quantitative fund to get fixed returns is also a good choice to make.