Many institutional investors cannot own shares priced under $5, and of those, few if any would be comfortable owning shares priced under $10 because as soon as the price hits $4.99 they are forced to liquidate.
There is also a stigma against low stock prices, whether it's deserved or not. I think these investors will actually want a share price of at least $30. A reverse split is the only realistic way to make that happen.