There are a lot of coins that remain in these algorithms. I am a supporter of mining on the GPU. You always have the option of switching to another coin. Every year there are new coins. They will always need the services of miners. Can you this way want to reduce the price of the GPU from AMD? You won't succeed. Demand will remain stable this year and prices will not decline. This has already been stated, NVIDIA. I'm sure AMD won't be an exception.
There are only 10 coins or so currently on the Cryptonight algorithm that I can find.
Monero has already stated "changing on March 28" - that removes more than half of the total network hashrate of ALL of these coins combined.
ETN has sorta-announced they'll be changing algorithm - they HAVE to for their "mobile mining" project to be viable - there goes 3/4'ths or a bit more of the REST of the combined total network hashrate.
If Bitmain puts their typical "about 3000" miners into each of their ANNOUNCED X3 batches, that's going to be ballpark 30 TIMES the total current combined hashrate for all the remaining Cryptonote coins arriving in the next few months.
It's going to be a worse bloodbath than SIA or X11 by far if so.
As of the last figures I saw, XMR was pushing sorta close to 1 Gigahash, ETN 300some Megahash (close to 400), all the rest COMBINED were less than 100 Mhash and at least one of them was less than ONE Megahash.
AMD card prices have already DROPPED a bit (vega in particular) and availability has improved a LOT since January - but ETH is still profitable enough that some new rigs are getting added, just at a much slower pace the last couple weeks.
ETH seems to be the ONLY major coin that has lost less than 50% of it's "peak value" at this point.
Final point - most AMD cards are mining ETH. NOT XMR or other CN coins.
Vega is the only major exception since it has so much higher performance on CN than on anything else.
