Supply chain localization is cited as the driver. Companies judge it advantageous to place production and development close to the market in order to reduce logistics costs and tariff uncertainty and to bring products matched to local standards and demand to market quickly.

Clustering in electric vehicles and batteries is another factor. A structure in which parts sourcing, testing and certification, and hiring can all be handled in one region bears directly on capital spending decisions.

A countervailing trend exists alongside it. Europe continues to debate reducing dependence on any single market, and some firms are spreading production to Southeast Asia and Eastern Europe. Strategies are diverging visibly by company.

There are implications for Korean and Taiwanese firms. When large customers deepen localization, pressure grows on component suppliers to follow; conversely, a higher share of local sourcing reduces export volumes. Both effects appear at once.

The decisive variable is predictability. Firms look at whether conditions premised on long payback periods, such as tax and permitting rules, data transfer regulations and intellectual property protection, are stably maintained.