The manufacturer are subsidising the tariffs if they lower their price in the us to counteract part of the tariff. When they charge other markets more to make up for the cost, they are making those markets pay for the subsidy.
That might be a short term strategy to avoid losing market share in the states and it’s rational if you think the tariffs are temporary. For goods like iPhones which are truly global that might last. But It doesn’t look like a stable equilibrium in the long term for any food which can support multiple suppliers because manufacturers who don’t do this will be more competitive in non us markets.
