I would argue that 90% of the investors would begin to withdraw in the case you described in the first sentence. Most of the current investors are not traders and they are not looking for profits in a short term. The main factor which caused the drop in price was not the selling by most investors, but rather the selling by a few but very wealthy ones, who are called “whales”. And we will continue seeing the bearish trends every time the price rises significantly until they will run out of their stashes, in other words, until all the coins they have will be distributed among millions of long-term investors.
The bitcoin has corrected far more than it was expected and I think all the big whales probably are out of the market and might be looking at opportunity to buy back lower so that they can make huge profits as bull run might begin when they enter and can en cash profits before the year end and have a great year. Keep buying on the dips to get the better profits on your money.