If you really had that amount of resources and bought ethereum at that time, you might have suffered such loss within this time and market. But if you still have the resources, you should buy ethereum now since I think this will be the lowest that it will reach for the year, wait for the end of this year and expect for the price to be doubled or tripled.
Even if he bought it then, he'll have a chance to make profit if he holds it a bit longer. We all see the market raising. You just need to be patient.