Most Chalav Yisroel products are also made by an Akum 🙂
The Rav Hamachshir is probably the only Akum not involved in the entire chalav yisroel process, well him and the cows. Heimishe yidden are not, for the most part, manning the milkers, they supervise the milking machines. They do not operate the bottling plant, they supervise it.