We will be better justified in noting a shift when the machines begin to take on management responsibilities. These will pe programmed presumably on behalf of the board or stockholders, and dictate the activity of remaining human employees.
A machine is not just its "management responsibilities". A machine is all of its parts. By shifting, I mean that some of the "parts" were people and are now automated or rely on robots.
Does it really make sense to say that a machine is not having its parts changed because its "management system" has remained the same?