There's also stuff that comes from inside organizations, and sometimes the business can't even say why they want something, other than "it checks a box we think

There's also stuff that comes from inside organizations, and sometimes the business can't even say why they want something, other than "it checks a box we think we should check". Especially true when replacing legacy software, there's always pressure to port over cruft even when there's high confidence that it's not used any more and costs more to build than it's worth. Some business people just can't let go of, for example, generating reports that no one ever actually reads.