Bitcoin doesn't need investors. A good currency has very little investment. Bitcoin will have succeeded when nobody wants to invest in it anymore.
If there are no investors, then the price will roll down, always down. People who receive cryptocurrencies for any actions will sell it, and if there are no investors, then there is nobody to buy, which means a drop in prices. Investors are needed.
We still need the investors but we dont need to panic. Nothing bad to bitcoin, it just happen that the market is not good and the price of bitcoin is affected on that. Investors will buy again at a dip price so dont worry whale are still here and waiting for the right time to buy and sell again.