...What is the fate of privacy coins? I am thinking these type of coins will find it difficult and can later all vanish and exist no more.
Despite the fact that governments of different countries prohibit the trade of anonymous coins, they are still in demand among investors. And we can see this in the example of the recently delisting of XMR, ZEC and DASH coins, which have fully recovered in price after the dump.
there are still clients of these privacy coins that's why they also survive this long in the market. because if no one or only few are supporting this type of alt, i guess by now they are barely surviving or in the stage of dying. but look at xmr, zec or dash, they are considerably old alts and still doing good in the market, actually much better than most new alts. im not seeing them to be phased out soon. they will surpass this challenge and who knows, they will gain more supporters in the process?