It was successful enough for the company to move away from the incubator and broody cage model. We had more trouble with hens changing their minds about being broody. We needed 20+ broodies hatching 4 chicks each in the first year if my memory serves me. We failed the first year but got it the second.
We did get a few hens refuse chicks and those chicks got human raised in a broody coop and that hen was taken out of the breeding cycle initially but some from what I recal that were prone to broodiness did much better sitting and hatching their own.

This was on one of the early free range eggs and meat enterprises. It was a sideline of a reasonably profitable foreward thinking farm. The chicks hatched and raised by a broody rather than incubator and human raised saved a lot of money once it got rolling. All that heat and light and attention costs.
The company went bust in the end. People just weren't prepared to pay the prices required to make a reasonable profit. It would probably work now because the plight of the chicken and peoples interest in their health and the provenance of their food is more widespread.
What I haven't really understood MJ is why you want chicks and why now.