If it was JUST Zcash that has crashed out, then your discussion that ASIC mining is the cause of this would have a valid point. ALL coins are down, this is a market issue, and nothing to do with ASIC’s. All coins at this time are tied to BTC.
BTW if Zcash is at 50.00 by the end of the year it will be because Bitcoin is valued at 2500.00 to 3200.00 AND NOTHING TO DO WITH ASIC MINING!
ETH (38% loss over 30 day high)
BCH (32% loss over 30 day high)
XMR (19% loss over 30 day high)
Zcash (27% loss over 30 day high)