I actually WANT to pay my guys well. When they pass inspections, I get paid, I am happy, things go well... I want to give them raises...
When we do not pass inspections, I have to send them back, they get paid twice to do the job, while I only get paid once... I am not happy, my company does not look good, and my contractors think we are stupid.
Which leads to lost jobs, and people wanting to pay less for the same job.