A bit late but I forgot to add the worst case I've ever seen. We had hired a new dev who was going to take over a senior position when we had multiple openings for over 6 months. The offer had been signed and returned when the head of HR rescinded the offer. When pressed for a reason why, his exact quote was, "We aren't the Yankees, were like the Oakland A's. Were just looking to get on base, not to be number 1"

Enterprise tax software, and selling data to hedge funds were the two worst for that