I have a hard time tracking income of a software product to specific employee contribution, unless it's a solo enterprise, which is rare and fraught with its ow

I have a hard time tracking income of a software product to specific employee contribution, unless it's a solo enterprise, which is rare and fraught with its own issues. Who's responsible for a piece of income? The original software author? The maintenance SWE? The SRE? The PM that identified the market opportunity? The exec that signed off the funds for the whole thing?