Apparently the chinese can mine BTC for around $3k currently. So everyone else will switch off but the price can still drop.
Also won't the difficulty be adjusted downwards if there is less miners/hashpower? So the BTC price can keep dropping irrespective of miners. How was mining profitable when the price was $100? If the price drops we just end up having fewer miners like a year ago.
Here is the answer I was trying to find the words for.
The only real risk is if the price goes below $3k and miners leave or sell their hashpower to a third party, exposing a real risk of a 51% attack. The “game theory” that created a second major SHA256 chain may backfire in that case and we would then have 3 chains of significance!
Vinny

