this doesn't even make any sense and you are wrong about some parts. i made them bold.
first is the fact that there was only talk about a big company in Japan releasing their new ASIC that they claim is more efficient than Bitmain's ASICs. i don't think it has reached any "farms" (not pools) yet.
second even if they already have it and it costs less for them to mine bitcoin that still doesn't mean they are going to sell it for less! that is not even a logical human behavior.
imagine this, you are in a signature campaign and lets say they pay you 0.01BTC per week which you sell. if next week they pay you 0.015BTC and price is $7500 will you sell your coins for $6000 per bitcoin? then why do you think miners will sell it for anything lower?