BlackRock boss Larry Fink’s latest annual letter highlights themes he considers vital to the achievement of ‘durable long-term returns’ for the investment community.  For a number of years, he’s been championing the pursuit of returns on capital realised in a manner that protects the interests of all stakeholders.  For much of the past 50 years, the financial market has been interested only in the welfare of shareholders with little consideration of the wider external stakeholder base. This, therefore is a marked change, coming from the man who has built and leads the largest investment company in the world. The approach…