Can ITSM deliver business value without BRM?

We have made deep strides in adopting best practice process and frameworks to deliver customer engagements. Looking at the future ahead, can we confidently assure ITSM is consistently delivering business value?  Do we have career progression for ITSM professionals to become Strategic BRM? It is the need of the hour to leverage BRM as a discipline and take ITSM to envisioned business outcomes