Big tech and geopolitics are reshaping the internet’s plumbing

WHEN THE navies of Britain, Estonia and Finland held a joint exercise in the Baltic Sea earlier this month, their goal was not to hone warfighting skills. Instead, the forces were training to protect undersea gas and data pipelines from sabotage. The drills followed events in October when submarine cables in the region were damaged. Sauli Niinisto, the Finnish president, wondered whether the Chinese ship blamed for the mischief dragged its anchor on the ocean bed “intentionally or as a result of extremely poor seamanship”.Submarine cables used to be seen as the internet’s dull plumbing. Now giants of the data economy, such as Amazon, Google, Meta and Microsoft, are asserting more control over the flow of data, even as tensions between China and America risk splintering the world’s digital infrastructure. The result is to turn undersea cables into prized economic and strategic assets.