Yes, agency, like truth, or infinity, or perfection, or godhood, or moving half-way across the couch, or half-way across zeno’s line, describes an infinitely logarithmic curve.
I always take my terms, whenever possible from the existing sciences, and ‘correct’ (redefine) the term.
In social science, one’s social, economic, and political agency is limited by ‘structure’ (institutions), and their (socialist) implication is that differences in income are an institutional choice not a necessity of human cooperation (natural law).
In social science then, we are considered to be equal in ability but unequal in institutional benefit.
So I extended Agency by correcting the falsehood of equality and necessity.