If these are the eligibility criteria then they should have been inducted years ago.
Musical influence - they - and Karen specifically - have influenced countless artists such as Madonna, KD Lang, The Corrs and many others.
Innovation - there was nothing more groundbreaking in the late 60s to see a female drummer, a fact which has been documented countless times in the years since.
Body of work - over a dozen studio albums, many of which contain gold selling singles. 100 million record sales today and counting.
Superiority in style - there is no parallel for their sound. What they created was a sound of their own and carved a niche as the first brother and sister duo since Fred and Adele Astaire.
Length and depth of career - they lasted four years longer than ABBA and many other inductees and crafted a body of work that included pop, Christmas material, country and blues.
If they are still being overlooked despite all this, then at some point it has to come down to some other undefined or undisclosed factor, whether that be Richard’s marmite persona and reputation among certain circles in the music industry (which I have read before) or something else we haven’t considered. It’s no confidence that they have been consistently ignored for this length of time.
Okay. Now, objectively, tell me what bias it was that kept Carole King from being inducted until two years ago.