If the world's largest financial organisations suddenly decide to put billions of dollars in commodities,the world will be in mess.And there is nothing that the govt. can do to control prices as we are not an isolated economy.The prices of crude oil has risen by almost 100% in last year so you can imagine that the prices of just about everything that needs to be transported from the place of origin to the place of consumption will automatically rise. Just as a matter of fact the diesel,kerosene and LPG (which are used by most of the people) prices are still heavily subsidised.