Dude, this is the definition of overcapacity "the situation in which an industry or factory cannot sell as much as its plant is designed to produce.

They have not been able to sell what they can produce. That is why delivery-date/lead-time which was 3 months ahead is now 2 weeks. This is the same for any other industry. If they could sell as fast as they could produce, the lead time would be maintained at 3 months now.

So, when they changed to BCH only payment, it took longer to sell for abit due to currency issues. That has nothing to do with demand/supply. Not everyone had access to an exchange like poloniex that had BCH back then and exchanges take many days to verify. So, customers take time to sign up and verify at exchanges before being able to get BCH. Coinbase didnt have BCH yet back then. Shortly after those issues, the website was using BCH only payment and miner stocks were once again out of stock quickly and with 2-3 months delivery lead time. Now, it is just overcapacity unfortunately.

Looking at the rate of difficulty increase, any rise in BTC price can easily be accompanied by a quick and sharp rise in difficulty because new units can be plugged in, in just 2 weeks. It used to have a 2 month lag time, so, that gives older miners some time to mine at that lower difficulty and sell at good btc price but that wont be the case from now onwards.

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(Moderator's note: This post was edited by frodocooper to trim the quote from QuintLeo.)