Nothing last forever and only those coins that gains more support from people with amazing promotion strategy will last longer. Greater strategy is a plus points to survive longer in the market. Since there are a lot of newly bloom coins in the market surely the competition is really tight. But not all of them will survive. Some will die and some will continue to surpassed the challenges the market will be facing. Coins that have potential and are functionally useful will survive longer. The market price status that goes lower in months causes some of the coins to crash and worst won't be able to bounce back. Best picking of coins will help you gain more.