40% of all Bitcoins are owned by just 1000 individuals.
This gives them a disproportionate amount of control over the market as they are able to dump them at anytime.
This is not to mention the high proportion of bitcoins held by miners and exchanges, who may have perverse incentives to ensure that as many people buy up bitcoin as possible and hold it for long enough for the price to rise.
Is there any way to deal with the high degree of centralisation that Bitcoin has?
I believe it is a natural life balance. Nothing will ever be equal in terms of ownership or distribution amongst everyone. Even with this 40% of all Bitcoins are owned by just 1000 individuals, this doesn't mean that the rest of the investors in Bitcoin have not been able to make profits from whatever amount they have been able to invest and if you have enough financial power to make you a whole, you can be that any time you want cos we still hear of people buy millions of $ worth of Bitcoins.