Reason for decline over months

[crocko]

Cooperate mining is the main reasons.

Back in the old days, people who mine believe in the technology and refuse to sell at low price. Cooperate miners will sell at any price if there is profit margin.

+1 These new huge farms / cloud mining business must pay the bill for electricity  and maintenance, therefore they always must sell.
The golden age of mining at home is at twilight.