The CEO's paid and the night watchman's pay are not related so it doesn't matter than multiple is involved.
related
adjective
- belonging to the same family, group, or type; connected.
"sleeping sickness and related diseases"
The CEO of company X makes 600 units; a mid-level employee of company X makes 1 unit.
They are related. You don't get to define terms.
You don't agree with my interpretation of "self-interest". Duly noted.
This is a discussion forum. We adhere to commonly understood definitions. Your "definition" of "self-interested" is incorrect.
Again, you don't get to define terms.