It was to talk about "team restructuring"
It also depends on the age of the company.
My current company is comparatively young and only really grew above the 100 people mark a few years ago. There are people who only worked here for 10-15 years, but are so integral as head-monopoly, that they might as well have been there forever.
In my old company, there were developers retiring that worked literally their entire lives for the same company.