I would say what’s wrong with the investors ? 
Though I highly doubt this will ever happen. The billion dollar market can not just disrupt itself. There are institutional investors, individual millionaires, million dollar worth mining farm network all over the globe! Believe me its whole ecosystem which is running 24*7 and 365 days.

If one element goes down from above list then another will always stood by bitcoin to support it.

Even though it goes down to such low level, we have no option to buy more and wait for recovery.