Another thing to keep in mind is that imperialism also has the effect of driving down wages in the imperial core since the capitalist can pay their workers less if the price of basic, essential commodities can be decreased by super-exploitation in the imperial periphery. This is a major reason why real wages in the US have been stagnant for a while, for example. So this would have a counterbalancing effect on how much a first-world worker would need to pay proportionally to their income for a case of soda if the process of imperialism were ended.