Per the wiki [1], Internet traffic is defined as: the amount of data sent and received by visitors of a particular web site.

The traffic between europe and the US is not solely dominated by the amount of data sent and received by visitors of a particular web site. It includes a lot of other background data such as backups between regions.

The analogy to economics would be the calculation of GDP in that you generally don't factor in B2B products/services when the end product/service is the consumer.

Obviously, this won't replace my "laptop -> router" communication nor "server -> server" communication but it's the consumer that matters.

[1]: https://en.wikipedia.org/wiki/Internet_traffic#Global_Intern...

you conveniently ignore: Internet traffic is the flow of data across the Internet. The phrase "Internet traffic" is sometimes used to describe web traffic.