I think you have unintentionally hit the nail on the head. Far too many flight departments have no-one managing them properly. It doesn't need to be a separate person, one of the pilots or in some cases an engineer can do it. But if it's not done then you get sloppy and often unintentionally illegal operations usually because the pilots think that all there is to operating aeroplanes is flying.
It is precisely because of this that the bureaucrats have seen fit to bring in lots of new requirements to try and make people sit up and do things properly. Note that this applies equally to many small airlines and most charter companies, not just corporate flight departments. Unfortunately, all this achieves is more work for people doing things properly while rarely stopping the cowboys.