This is a solved problem. Google may not care but in general companies want to know if one of their businesses is actually making money or just a perceived succ

This is a solved problem. Google may not care but in general companies want to know if one of their businesses is actually making money or just a perceived success because of the conglomerate. Of course a company may fudge the figures to lean the calculations one way or the other but enough theoretical and practical data exists for accounting costs. https://en.m.wikipedia.org/wiki/Cost_accounting https://en.m.wikipedia.org/wiki/Cost_accounting