> The salaries breakdowns I have seen did not worked like this at all. Esoteric languages paid less. That's because salary is only one part of the cost. You ar

> The salaries breakdowns I have seen did not worked like this at all. Esoteric languages paid less. That's because salary is only one part of the cost. You are looking as if it was the only cost, which is not true. Finding people for the project costs. Finding people with exotic abilities costs a lot and takes a lot of time which may complicate your plans or require you to have extra staff just in case somebody leaves. It may pay less because in some specific niches people will work for less just to be able to do what they like to do. If I had ability to join a serious Common Lisp project I might do the same.