Chain of necessity or chain of distribution
In a group effort there are people who contribute more than others - there are those who contribute time and those who contribute money. There are others who do one off help. We should reward all these people fairly.
Imagine a community has a community farm or kitchen. The profit - the food or produce should be distributed fairly.
Everyone who contributes should receive a reward for their efforts. The people who do the majority of the work should receive the lion's share. The manual labourers in the kitchen or farm should receive the most.
We need some way to vote on the distribution of gains. A project can only succeed if it has capital owners and workers. They are both necessary for success. But the workers do more of the work.
This is like a proportional vote except we vote on percentages for returns.
I don't think Blockchain or contracts solves this problem.