This is the problem with this, in simple cases like “you add N employees” then you can vaguely approximate it, like they do in the article. But for anything th

This is the problem with this, in simple cases like “you add N employees” then you can vaguely approximate it, like they do in the article. But for anything that’s not this trivial example, the person who knows the value most accurately is … the customer! Who is also the person who is paying the bill, so there’s strong financial incentive for them not to reveal this info to you. I don’t think this will work …