[curiousquestion]

I would say it's probably close to impossible to directly correlate a developer's input to an amount of money his effort is worth in the form of a commission.

Also software planning, architecting, developing is such a nuanced process that it would likely be easy for someone who didn't want to pay someone substantially for their efforts to "sabotage" them.

Also I think in the big picture business folks likely wouldn't want to see the reality, which is that developers, in a technology-driven business are likely worth 90% of revenue while everyone else is likely worth something like 10%.