Markets are cyclical, they rise and fall. But during the fall, many altcoins are already dying for ever, and when the market grows, they do not recover.
Any Altcoin that don’t have good use case and the price is just base on hype and trends onces such Altcoin dump they will never see the light of the day again, sometimes the team are actually the ones who pull out liquidity and move on in such case we can’t expect such coin to recover from a heavy fall, but if the coin have some good use they will gradually recover as their usage will speak for them.
The main thing about altcoins that will become pearls is not Altcoins that rise because of hyoe or FOMO trends, The usefulness of altcoins must be developed by developers so that they continue to get sufficient liquidity if the Altcoin falls, then when the market is bullrun, the altcoin will follow the upward movement just like other new altcoins.
Every altcoin that has good future uses will have many investors collecting it, Whether an altcoin develops or not depends on how the developer promotes it and can create more networks into it. I can't be sure that all dead altcoins will become gems, all related to their usefulness and enthusiasts.