Maybe the market is going down at this moment but it never says that everything is going to zero. If we just look back at the history of bitcoin, its decreasing its value but no data as its zero value. The decrease of value of bitcoin in the market is due to many factors that somehow have effect on it. Or maybe sone manipulation is taking place (this is just my speculation, not saying the 100% authenticity). Im not a pro in trading or in economics but due to the econonic crisis in some big and progressive country, somehow also affect the current situation of bitcoin and other cryptos.