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Happily, we can also control the volatility,
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As someone in the topic said it is not about volatility control, it is about how not to be seriously hurted with volatility.
And what is interesting is that volatility of bitcoin reduces with time and will do so in the future. The more expensive and widespread becomes bitcoin the harder becomes to make its rate's fluctuations be big relating to the current rate. Someday in the future bitcoin is expected to become some very stable currency slowly rising in price.
I am with you at some time when many big competitors comes to market its harder to manipulate the market price for anyone and in future retail investors comes in power, So someone sells in bulk then many buys means a stable and uncontrolled market , ready for work as a medium for payment and financing sectors .