I think the author is referring to the mission statement of companies. While some missions statements have political elements, I can see plenty of mission statements that give a common purpose and are not political. Examples: "Accellerate the advent of sustainable transport" -- Tesla, "Build the best CPU" -- Intel (?).
It is well known that a strong mission statement is an important motivation for people to join and continue to work at companies (e.g. Pink's Autonomy, Mastery and Purpose Framework). So to describe a company as a group of people who are joining together for a common purpose is not wrong.
(Of course, there are of course many more factors that influence work-place selection and motivation.)
Can you elaborate where you see this all rooted in politics?