The market may continue until people finally understand how it is played and will be less inclined to sell off their bitcoins in a panic or dump in price, it will gradually become less severe as everyone will learn to ignore it.And the market will just grow naturally
People will only be able to understand anything until they start seeing the need to use it. The nature of the market currently tends towards the speculative side, and in that case for a very much decentralized market, I would not expect not to see any form of manipulation.
Manipulations are there every time for most markets and it is really nothing new like someone rightly said, and for things like this to change, this is the reason it would be more appealing to see a decentralized market get to do better in the long run with real life usage, more demand for it, and less manipulation as the case may be.