The truth is that, if a candidate competent enough to work for us, then they can get hired by a firm thirty miles down the road who pays way better than we do. Thus, one line of questioning during the interview process is figuring out why the candidate wants to work for US instead. Usually it's because they want more exciting work or are interested in the work we are specifically doing. If someone just wants ANY job, it's a red flag that they've applied to the wrong place.