> BBC.com reaches 139 million visitors globally, including almost 60 million in the US, the corporation said.

From: https://www.bbc.com/news/articles/cx2vgkn7w10o

The other countries most likely don't make up such a big chunk of visits / costs.

FWIW: There's many news sources in the US (Usually regional news papers etc.) that just throw a forbidden or 402 status code right away at anyone not using a US IP.