I worked in tech support and had a great relationship with engineering and etc. They'd ask tickets get assigned to me because they knew I was honest and thorough when it came to documentation and etc. It was a good gig.
Eventually we were acquired and before selling the company off as pieces they laid a huge % of people off, including myself (it was ok, I was ready to move on / and would eventually change careers).
The company that got a bunch of the engineers eventually needed support people and the engineers reached out to me to apply. I applied.
But the job requirements had changed, masters degree required. I no longer qualified (I didn't / don't even have a degree). I applied, but didn't make it past new company's filters. The engineers were told that if I didn't make it through the filter they wouldn't consider me.
20 years doing that job in one form or another, and there's maybe a handful of people who know the proprietary side of their equipment... but no masters = not even considered for job.
This was a technical job to be sure but it was largely IP (and some proprietary stuff) networking troubleshooting. You could take capable high school students and they could do it with some good guidance.
The hiring people industrial complex is insane.