The enterprise try every possible to reduce the cost of supply chain outside, but the same, their rivals soon will imitate to do the same, sales promotion measures, the price war, and so on.

这些企业尝试了各种可能来降低供应链以外的成本，但是同样的，他们的竞争对手很快也会模仿采取同样的措施，进行销售推广、价格战等等。

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The British Gas boss claimed that 85% of the price it charges customers is outside its control, including wholesale gas prices and the cost of government policies to try to reduce emissions and help the poorest households.

BBC: British Gas vehicle and employee