It will, that’s when you buy. This happens every single time, whether it’s $250 to $70 or $12,000 to $5,000 or $40,000 to $????... ride the wave.
If they didn't cash out, there are not profit. Bitcoin could take a 80% dump within an hour and most people would be screwed.
So they're in 100% profit if they sold. Usually when you want to sell, everyone else wants to sell too (see Mar 2020) so it all comes crashing