It's hard to say which coins will survive in the future, because the market is unpredictable. As long as bitcoin persists and still exists, I think all Altcoins can survive and stay there, even if some Altcoin values are very low. everything will depend on market conditions and how these conditions result in incentives to use this cryptocurrency .
good analysis, but there is always a possibility for those who believe will happen but time will answer. with technology all becomes possible hope we witness the history of cryptocurrency 