Any btc price prediction should be taken with a grain of salt.
Is it possible? Yes
Probable? Maybe, if this decline is structurally similar to $250 to $70 decline in the summer of 2013.
Bitmain and Innosilicon (competitor) are producing vast amounts of mining machines and people are buying (so far).

Right now when mining at a cost of 10c/kwh, breakeven point is somewhere at $7000-8000/btc.
How likely would be a five-fold difficulty increase in 1.5-2 years?
Quite likely as it would take slightly less than 4% increase in difficulty per adjustment period (about 13 days).
last five adjustment periods were 6.91% on average.
last 10 adjustment periods were 5.7% on average.

With 5.7% adjustment per 13 day period in the next 1.5 years, btc price would have to be $70000-80000/btc for miners to break even when mining at the end of that period (end of 2019, early 2020).