What percent of people do you think are able to resist selling their BTC when confronted with huge profits they've obtained. Say 500% or more even?
we are still in the beginning of crypto currency revolution. 500% is a reason why they wont sell their btc, because they believe it can be more than that. So I think its just less than 5%. Its difficult to decide when you want to open a buy positon right now when the price are high, but its even more difficult to cash out when you buy it at low price.
It is actually going to be more than that. Most adults (not new born babies) in this crypto world today from experience already know that holding is far better than trying to quickly sell for profit. Ask those who made the mistake few years ago and they will tell you.