The common thing I see is there is an implicit bias from interviewer, who always wants to hire someone like himself/herself. I also hear comments from the candidate that - as an interviewee if I interview the interviewer, he might fail too. If the interviewer stays unbiased, we may see better results.
The interviewer interviewing the interviewee is hilariously true. No interviewer could answer questions about my domain expertise. Just like I could never answer questions about theirs.
But they are in control and I am not, so there's no fighting it, just indifferent resignation to the situation, and attempting to sort through it.