Funny, you just explained how easy it was. But now it's so hard that Apple engineers can't just rebuild the parts they need?
I think the simpler explanation is one you'll find in many comments here: Dark Sky was unusually good, and Apple bought it to get all that goodness to themselves.
I think the simpler explanation is one you'll find in many comments here: Dark Sky was unusually good, and Apple bought it to get all that goodness to themselves.