But as an SWE at a manufacturing company, how much can your work increase their revenue/profit? The bulk of their income is still coming from the widget/commodity they are producing.
A seasoned cheme at oil and gas was easily pulling 300k + 2M pension + 10% 401k match
For chemical or mechanical engineers they need a lot of infrastructure to do work so employees are more locked to employers and wages are not as competitive. Employees are unable to capture their value without the employer therefore they get a smaller piece.
Also SV has an obsession with hiring the best while most large manufacturers consider heads interchangeable with only a few spots reserved for top talent.
So most of the requests are insipid, some are impossible, and they have no desire to spend effort to understand either.