Trade restrictions on computing hardware are usually expressed numerically: a combination of processing throughput, memory bandwidth and the speed at which chips can be linked together. That makes them engineering targets as much as legal ones.
Design follows the threshold
When a rule caps interconnect bandwidth, the practical response is a variant with fewer or slower links, which reduces how efficiently many chips can be pooled for one large training run while leaving single-chip performance largely intact.
Second-order effects
Restrictions also accelerate domestic alternatives, shift demand toward renting capacity in permitted regions, and complicate second-hand markets, where the provenance of a card determines whether it can legally be resold across borders.