simple: most places view technical people (coders at least) as someone who is making money when they code. Its in-house outsourcing. Senior devs end up jumping

simple: most places view technical people (coders at least) as someone who is making money when they code. Its in-house outsourcing. Senior devs end up jumping ship when they realize they could make more money consulting. I would tweak your description and convert the PM role to QC / Support.