Doesn't matter, we don't need a high hash rate for Bitcoin to work correctly. A lot of people assume that Bitcoin needs a high hash rate in order to process a large number of transactions. But that is just wrong. The hash rate is totally irrelevant to the inner workings of Bitcoin.
This is true, however, a low hashrate means easy to attack. At these prices the incentive to attack is much greater than single digits so the only way for a low hashrate to work
safely is to have a low price to match it.
Yeah, that's right... It could be easier to attack, less money is needed, yeah. But the beauty of it is that it effectively is a self-regulating system. As soon as the difficulty goes down, there's more incentive for people to turn on their (old) gear!