Nothing I said suggested otherwise.
Claiming that there is a set number of jobs and the overall earning wouldn't change with more productive labor is suggesting a zero-sum game.
Here are some examples:
1. A former felon is unable to work a low paying job at a library, because they have a background check. Someone else takes that job - but only if they couldn't find a higher paying job. In this case tax revenue doesn't change.
2. A former felon has a unique skill (e.g. manufacturing specialty welding machines), that it is impossible to find someone to replace. That business opportunity goes by, and in this case tax revenue decreases.
That's exactly what "zero sum" means.