They only coincide sometimes. Academia is one place in particular where the two do not go together.
You can have a lot of very hard to learn and impressive skills that have no economic sense whatsoever. Don't expect to get paid for them.
This can be about what you can give, it is also about what your alternatives are, what their alternatives are, what you can take away and what you can threaten.
You don't need skill or economic sense to have it.
Sometimes you have to give first.
But only sometimes.
They only coincide sometimes. Academia is one place in particular where the two do not go together.