Talking seriously, I believe the ones losing on such bubbles are because they were so greedy to buy a so already appreciated coin, if people had stop buying after 50 usd, they wouldn't be crying now.
Yes, true. This is just trading commonsense.
Alts in a rising trend often get too far ahead on price. Lots of buyers pile in at the late stages, and then they are trapped underwater. Even if the fundamentals are still really strong, the price cannot move ahead until the weakest buyers are shaken out. This sometimes takes a lot longer (can be many months, or even a year) than people imagine, and a lot bigger price drop is required.
Dash has simply got ahead of itself, and the price will remain in a corrective phase (or downtrend) for sometime. The only questions then are 1. Are the fundamentals solid ? and 2. Are you very patient ?