A resource efficient, net-zero global economy will require significant business investment in environmentally sustainable solutions over the next decades. At the same time, many of the OECD’s member countries have been struggling with chronic underinvestment in their aging infrastructure systems for decades. To overcome this, the green transition must become a fantastic market opportunity, rather than an expensive problem. In 2025, the OECD needs to promote environmental policies that are rational, and not ideologically driven. The key to success is closer public-private engagement.