The thing is, AW suffered years of neglect from both NBC and P&G. I just remember Ed Trach, who was the last person that ran the P&G soaps with any sense, always talking about the CBS P&G soaps to the press and never bothered to or barely mentioned AW. By the time it was canceled, those who were responsible for overseeing it just didn't see it as any sort of priority.
AW never got the same attention and acclaim in its last two decades that ATWT received under Marland or what GL received under Long and Curlee and her team. Unlike the other two P&G soaps, its last heyday (at least in the soap press) was too strongly associated as being in the 70's, which I always found a bit unfair.
On the other hand, I do think P&G and CBS tried with both ATWT and GL, they were just never able to get it together, and made all the wrong decisions with who they hired and fired. Truth be told, CBS kept both shows around a lot longer than NBC and ABC would have had they been on those respective networks.