The problem with the examples you mentioned that their skills are fully transferable. 30-50% of my knowledge is non-transferable because of a)Company domain kno

The problem with the examples you mentioned that their skills are fully transferable. 30-50% of my knowledge is non-transferable because of a)Company domain knowledge b)In a technology the next company won't use. It would be a better comparison to a bridge engineer to build a bridge in a different country. The laws of physics are the same but regulations are not. Building any non-trivial software is more comparable to this. If you hiring for Wordpress (or any other) sweatshops that's a different thing. But then you hiring factory workers.