That said -- eventually the price will drop to the point where the price is entirely driven by Bitcoin's natural customer base -- tax cheats, money launderers, drug dealers, etc, and will probably in fact over correct.
Just for the sake of argument, let's said that 'natural price' is $500 or $600 a bitcoin -- it bottomed out around $300 last time and we've had a 'halvening' since then. So let's imagine the price drops down to below $1000, and stays around that range for a year or more. Then a new halvening happens, the price doubles to $2000. Maybe someone figures out how to do something useful with cryptocurrency? 3-4 years from now, people will have already forgotten about the last bubble and might FOMO again. Bitcoin has a long history of boom and bust with each boom being bigger than the last. It won't take much to convince people that another boom is on the offing.