There is such a term as "forced investor", and it concerns precisely those people who did not guess the entry point when buying bitcoin and because of this they sit and wait for the price to at least return to their initial entry point, for example 120,000, so that they can simply sell bitcoins and regain their funds. And this is a very bad situation in which a person is mentally exhausted and at the same time he is not a full-fledged investor.
But if he had bought in stages, as the DCA strategy advises, this would never have happened to him, because he would have distributed his buying points in bitcoin over time, which would have caused the price to constantly average, and he would have felt like a truly free investor who was moving towards accumulating bitcoin, and would not have been sad looking at his an unprofitable position.
Your forced investor concept may be useful in explaining some situations, but I wouldnt take it as the main explanation for the Bitcoin investors problem. Suppose a person bought Bitcoin for $120k at once and now the price has gone down. If he is just waiting for $120k to come back. He can sell it at $120k and get his dollars back, then the first question that comes to mind is what was his real goal? To accumulate Bitcoin, or to take a price trade and take a fiat profit?
For a long-term investor, his initial entry price is not supposed to be an exit line. The focus of the investment is more on how much Bitcoin is being accumulated, depending on how sustainably he is buying according to his cashflow.
Now, lets talk about DCA.
Yes, if a person had bought over time without pouring the entire available amount into $120k, subsequent purchases could have reduced his average acquisition cost as the price went down. This is a practical benefit of DCA. Suppose he bought regularly at $120k, $100k, $105k and $90k. His average cost has come down, but if BTC is at $70k, he may still be in unrealized loss. Here it is understood that dca does not stop the risk of loss or completely eliminate it. A single entry point reduces the need to guess correctly and helps in accumulation over a long period of time. So if you bought at $120k and today your only thought is, When will it be $120k so that I can get out?, then maybe the real problem is in the mindset. This cannot be an investment in any way, it is a trading type mindset.
In the last 12.5 years since I have been in bitcoin, I have heard many times guys whining about how they had bought at the top and how they know about other people who bought at the top.
I frequently would say: "So fucking what? If you were serious about bitcoin at the top, then our current prices should be really good."
Many guys think that they are locked in when they start at the top, and sure, perhaps part of the problem is that some of them think that they blew their whole wadd at the top, so that they do not have any money left (or that they want to put into bitcoin).
Many times the problem is resolved by ongoingly investing.
In late November 2013, when I started to buy bitcoin, I started at the top, so my very first purchase was for bitcoin at $1,200 (which was higher than the top because of various fees in the way that I had gotten it), so then sure I continued to buy bitcoin and my average cost per bitcoin continued to get lower because the BTC price continued to go down throughout 2014 and then to pretty much stay flat at the bottom (around $250) for the whole of 2015. So by the time we got to early 2015, my cost per BTC was in the upper $500s and then by the time we got to the end of 2015, my cost per BTC were slightly below $500, but my holdings were still largely in the negative based on the then BTC prices.. but I continued to buy and even having my own cashflow problems that made it difficult to buy very much bitcoin in 2015 when the prices were the lowest.
Part of the value in NOT blowing your whole wadd at the top is that you are prepared to continue to buy if the price goes down.
Part of the value of continuing to buy bitcoin tends to be that your average cost per BTC continues to go down so that BTC prices do not have to reach the previous ATH for your BTC holdings to come into being "in profits" on paper.
So sure there were likely some guys who bought at higher prices and they may even could have had bought "too much," yet I would think that if they continue to have an income it likely could be a good thing to continue to buy, yet surely guys have to make these decisions for themselves and surely guys do get worried about an ongoing and continuing (and never stopping) spiraling down of the price, so that they continue to buy but the prices continue to get lower.. So yeah, guys might have that fear, yet they still have to decide what they are going to do...and sure some guys do end up choosing to buy high and sell lower than their buy price rather than to just keep buying.. since there are no guarantees that the BTC price is going to go back up or even go up enough to recoupe losses.
And, yeah some other guys continue to buy but then as soon as they get into "profits" they end up selling, and yeah, those are choices. The ones who sold at $500 in 2016 were likely regretting it. Even the ones who sold at $1,200, or any place under $3k were likely regretting it, yet people do what they are going to do, even dumb shit (maybe their level of dumb is not realized until several years later, too?).