You have said it exactly the way it is. Some people have to sell for some people to buy. We have witnessed a serious downtrend this year. Only within a few days, bitcoin dropped buy about $2000. For some people, it the end of the road while it means the opportunity to make good gains in future for some people.
Just depends on the people who how much they can afford to lose in this bear trend,when someone can lose completely all their capital still there will be no problem them then they are the people who are going to make more profits than anyone else.