I don't think it would be possible that we'll run out of bitcoin after having too many whales buying it. Bitcoin circulates continuously and no matter how down the market is, someone will still be willing to sell. Regardless of the quantity of whales and the how much bitcoin they bought, it is very impossible that we'll run out of bitcoin. Also, even though bitcoin's quantity is limited, it would be too expensive to buy all of it. No one in their right mind would think about doing so. The dip is an opportunity we should not miss so buy while the value of bitcoin is still low or lose the chance.