I am not quite understanding why you are inspecting operating costs so deeply, since the subject is not strongly relevant to whether an enterprise has private owners who claim profit.
Every enterprise creates products that are sold for some value. Production requires a variety of non-labor inputs. The enterprise must also pay operating expenses.
The sale value of products minus the sum of inputs and expenses is the value of the collective labor for all the workers in the enterprise.
The value is distributed within the enterprise. In the case of a privately owned business, distribution of value, like all operations, is controlled by owners, who pay workers the minimum amount required for their labor to be provided, and claim the rest of the value as profit.
For an enterprise that is cooperative, no owners claim profit, and workers may choose how to distribute value among themselves, realizing the full value of their labor.
In either case, some value may be invested in expansion of the enterprise.