[okanat]

My worry there isn't (just) Europeans who directly work for American companies but Europeans who work in the _markets_ that US companies created.

For example almost all digital marketing agencies are almost pure resellers of big tech products: ads on Facebook, Google or Microsoft networks. Similarly majority backend solutions are delivered over 3 big cloud providers' specialized products like AWS Lambda or GCP BigQuery. The definition of Mobile Software developer is someone who writes software for Google or Apple platforms. The entire fields will disappear overnight.