If Bitcoin price pumps from $1300 to $3000 in few hours, nobody would make profit from it, because the exchanges wouldn't allow you to sell your Bitcoins and make the fast profit, it would bring a big loss for exchange sites.
Do you agree with this?
I don't know if that would ever happen I mean that is a huge pump that you are talking about,
And we still don't really know if the exchanger would let you do it or not but I think they would provably just let you do it since it is the price of your coin.