What I meant as their own business is that I am actually referring not to the chinese exchanger but rather to the ASIC manufacturer because with the price going as low as $100, mining wont be sufficient anymore with the current miners. They will be forced into either trying to find a sustainable chips that allow miners to get some profit even if the price is as low as X or that sustain the price by giving up some action like big buy wall and try to manipulate the price
If a business becomes unprofitable, it usually closes its operations (and switches to something else), or just goes bust if it is not lucky enough. If these ASIC manufacturers are not exchanges (which they are not), they won't have enough funds to build "big buy wall". And I guess they wouldn't really want that even if they were or had enough cash...
To sum it up, I am not be expecting deliberate "big buy walls", and yet less so from ASIC manufacturers
The ASIC manufacturers make tons from selling hardware and mine for themselves so high chance that there will be an "action" there because standing and watching the price fall down will be the last option they do. If it is become unprofittable then they will have to ditch all of the existing hardware which means a double dip loss for them . Chinese isnt the type to let their business go down without any action to prevent that though
By the word "action" , that would be a purely speculation from mine . Given the fact that chinese isnt the type to let their business go down without any action and change it to the other, there will probably be an "action". "Action" in this case isnt solely from the manufacturers alone, could be from colleagues, investor or the other because with such an enourmous reputation of one of the world's largest ASIC manufacturer then they will probably has a wide network of investor or such.
If it hits $100, I doubt that there will be an euphoric buys because even the last pressure from January 2015 that drove the price below $200 has left a scar to few people as most people have been dumping alot, jumping the ship and saying that BTC is dead.
The sell pressure of that time is huge and it will be much more if it reach $100 marks and it could actually drive the price to be dirt cheap (worst case possible scenario) and alot of people could be jumping off the ship
It doesn't matter if many were hurt (in fact, you said few while meaning many, as I got it). I guess yet more had been hurt (mildly speaking) when the price collapsed from over $1,100 to mere $250, and so what? Today's price is above $250, thereby it doesn't count a fuck if someone jumped off the ship when it dropped to $160...
Market never lies
The price has never dropped to a point where mining become totally unprofittable. The last drop to below $200 still on the mark where mining is barely profittable in some places but if it drop to $100 or below it, mining will not be profittable at all anymore (unless you manage to get a free electricity or else) . So at this point, high chance that the number people jumping off the ship will be bigger and also that it could mark as the start of heavy sell pressure constantly