This means that more efficient banks will inevitably get a bigger share of the cake in concentrated markets, such as Britain, and buy weaker, less efficient competitors in fragmented markets such as America.
To have a chance of surviving in its current state, most economists say the eurozone needs growth and the only way it will get that - across the region - is through a weaker currency.
However, these studies do show that farmers (who get only about 30% of the retail price for meat) have much weaker bargaining power than the food processors and the supermarkets who can use their clout to keep prices low.