Idk, I’ve worked with recent grads where their work likely did bring in > $100k in a year. Maybe only took a month to get up to speed. Commits from all devs should be reviewed, and all code should be tested before pushing to prod, so those catastrophic costs should rarely be a problem. We had a good relationship with professors at a local university, and they’d send us their top students. The students would work with us for a while before usually getting picked up by big tech.

Pretty sure my work right out of college brought the company around $300k the first year (wrote the firmware for an electronic control board mostly by myself, which allowed the company to secure a large contract).