Here's why a firm that moves its operations to the cloud will generally find it much faster to roll things over to the next year.
The De Vries case and the "$20k bill" clearly involved miscommunication and lack of documentation. This is exactly why engagement letters are so important.
Does rubbish data help you make good business decisions? It's not a trick question. If you put crap data into your system, you'll get crap data out.