A stock drop does not in and of itself kill a company which has positive cashflow, although it may give the executives heart attacks and leave it vulnerable to takeover.
If the company keeps the startup structure of paying employees in stock options and growing by VC money into the several billions value, yes a stock drop can kill it in and of itself.
If the company keeps the startup structure of paying employees in stock options and growing by VC money into the several billions value, yes a stock drop can kill it in and of itself.