Margin expansion among multinationals across recent decades had several common sources. Production relocated to lower-cost regions, supply chains were optimised to the limit, tax structures were arranged globally, and market reach expanded economies of scale. All of these rest on relatively free cross-border movement, and that premise has changed in recent years. The first change concerns production location. Tariffs, export controls and local production requirements mean the lowest-cost configuration is no longer necessarily available. Companies must build duplicate capacity across regions, and duplicate capacity means lower utilisation and higher unit costs. This effect is structural and does not reverse when the economic cycle improves. The second concerns taxation.
Multinationals lowered effective tax rates for many years through transfer pricing and the placement of intellectual property, and global minimum tax arrangements have narrowed that space. Rising effective rates affect net income directly, with magnitudes varying widely across companies depending on the structures they previously used. The third concerns market access. Serving global markets with a single product is being replaced by regionally differentiated requirements: data localisation, product specification differences, and market-specific approval conditions. This increases duplicated development and compliance work, and the benefits of scale decline accordingly. How valuation adjusts differs from a cycle, which is the essential distinction.
Cyclical earnings declines usually come with multiples holding or rising, because markets expect the cycle to turn. A structural decline in margins compresses earnings and multiples together, because the future level of earnings is itself reassessed downward. The difficulty lies in telling them apart. A period of falling margins may be cyclical or structural, and the early data looks similar either way. Available clues include whether cost increases concentrate in particular regions, whether capital spending direction has changed, and whether management commentary about capacity placement has shifted. Exposure varies enormously between companies. Those with revenue and production concentrated in one region face smaller disruption than highly distributed ones.
Companies dependent on specific cross-border supply chains may face effects far exceeding what their geographic revenue split suggests. Using revenue distribution as the basis for judgement is therefore insufficient. For investors, the practical significance is that this changes a set of long-run assumptions. Margin levels across the past two decades rested partly on particular global conditions, and using that period's average as a future baseline embeds an assumption that those conditions persist. Writing the assumption down explicitly is more useful than arguing about whether it holds. One caution applies to the wider narrative.
Aggregate trade volumes have not collapsed, and much of what has changed involves the composition and routing of trade rather than its quantity. Company-level exposure to these shifts differs from the headline picture, and conclusions drawn from macro-level trade statistics can be a poor guide to what any individual business faces. One asymmetry in timing is worth noting. The costs of reconfiguration appear promptly in financial statements as capital spending and margin pressure. Any benefit in reduced disruption risk appears only if a disruption occurs, and is then difficult to attribute. Reported results will therefore look worse during the transition than the underlying economics may warrant, and distinguishing the two requires patience the reporting cycle does not encourage.