A camera that can do facial recognition from outside of national borders doesn’t need to be a petapixel one. A mid-gigapixel camera with good optics can cover an entire city at once (or at least it could if it wasn’t for all the buildings in the way).
The main barrier to petapixel cameras is that they don’t serve your goal of full public monitoring (regardless of whether it’s by the government or by everyone individually).
Disproportionate to what?
They probably didn’t get a 4.2x income multiplier (168 hours / 40 hours), or even a 1.276x one ((2000 hours + 4 weeks * 128 extra hours per week + 40 hours extra vacation)) / 2000 hours per normal year), so I don’t think it’s disproportionate to the workers.
Disproportionate to society as a whole? That would take an absurd amount of price gouging given how valuable the material was, and I feel like someone would’ve at least written an expose (if they weren’t criminally charged).