This generates economic activity across the entire chain, enriching everyone along the way. All of these people end up paying more taxes. Collectively the increase in activity can cause retailers, suppliers, and manufacturers to hire to keep up with demand further feeding the cycle.
IIRC the research shows ex-cons are far less likely to re-offend in the future if they land a good job. How many kids looking forward to $130k/yr jobs would choose to join a gang instead?
There's also the deadweight loss of criminal prosecution and jailing offenders. It generates a few legal and prison guard jobs but most of the taxes spent in the criminal justice system don't contribute constructively to society the same way building new bridges, subway systems, or funding science research does.
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.
I agree with the your overall comment, but this part is setting up unrealistic expectations. You should be asking "How many kids looking forward to $30k/yr jobs ..."
Median salary across the US is about $30k, or up to $50-70k (with corresponding cost of living) in a few rich cities. Anything above that is a good-paying job for most of the population, criminal record or not.