Who Carries the Compliance Load?

U.S. export controls do not fall on a representative exporter. They meet a population already divided by size, product breadth, multinational structure, and technological activity. This chapter compares those forms of exposure and asks what they imply about a firm’s ability to absorb a targeted restriction. The evidence does not produce a universal winner or loser; it distinguishes value concentration from exposure intensity, and organizational capacity from vulnerability.

Large firms dominate value, but not every form of exposure

The first comparison is between the distribution of export value and the distribution of firms. If export controls created a large additional fixed cost, one might expect controlled exports to be much more concentrated among the largest firms than exports generally. Large firms are more likely to have legal staff, established procedures, and the resources to absorb specialized review. A sharp concentration gap could therefore suggest that compliance acts as an extra barrier to participation in dual-use markets.

The Census study does not find a large gap. In its 2023 data, the top 1 percent of exporters accounted for 83.96 percent of all U.S. export value. The top 1 percent of firms exporting goods subject to the EAR accounted for 87.63 percent of that controlled export value, while the top 1 percent of firms exporting explicit ECCN goods accounted for 82.47 percent. At the top 10 percent, the corresponding shares were 97.23 percent for all exports, 97.91 percent for EAR-subject exports, and 97.81 percent for ECCN exports.

These differences are real but close enough that the authors interpret them as evidence against a new, implicit entry barrier created by export-control compliance. International exporting is already highly concentrated. The controlled market largely inherits that structure rather than replacing it with a separate hierarchy in which only the biggest firms can participate.

That conclusion needs to be stated carefully. Similar concentration does not mean that compliance is costless, nor does it show that small firms face no disadvantage. It says that the observable distribution of export value does not look radically more concentrated once controlled products are selected. The study does not directly measure compliance spending, staff time, software, or the firms that chose never to enter an export market. A barrier that prevents entry before a firm appears in the data would be difficult to see in a comparison among existing exporters.

The more informative question is what happens within the set of firms that are already exposed. There, the share of controlled activity in a firm’s own portfolio moves in the opposite direction from a simple “large firms bear everything” story.

Small exposed firms are more specialized

The study divides firms with at least one EAR-subject shipment into employment groups. The statistics are firm averages, based on about 79,400 firms with nonmissing employment in the 2023 Longitudinal Business Database. Among firms with fewer than 50 employees, EAR-subject shipments represented an average 63.3 percent of export value. For firms with 50 to 249 employees, the share was 54.8 percent; for firms with 250 to 499 employees, 52.0 percent; and for firms with at least 500 employees, 53.1 percent.