You haven't explained it since it doesn't follow. The fact that a single company uses many technologies has no effect in itself on the pool of people using thos

You haven't explained it since it doesn't follow. The fact that a single company uses many technologies has no effect in itself on the pool of people using those technologies. Besides, that's another misapplied requirement of yours: experience can be gained, it will take longer, but it's just another "takes more resources" issue, not something that narrows the field since for some reason you added that requirement before hiring, not before writing docs. I don't think it's a trivial (that's your straw man), I just disagree that it requires rare man of mythical set of skills to accomplish to make it justifiably hard for poor Apple