Still Asking About the Business Case for Sustainability? Your Customers Already Answered It.

A slump in the headlines, not in the fundamentals

If you only read the headlines, you would think corporate sustainability is on its way out. Programs are facing more scrutiny than they have in years, ESG has become a word many executives avoid in public, and leadership agendas are crowded with tariffs, AI and a regulatory picture that looks different in every jurisdiction.

All of that is true, and it is also beside the point. The vocabulary has changed, and in plenty of companies so has the org chart, but the economics that made sustainability worth doing in the first place have not moved. What looks like retreat is, in most of the companies we work with, a disciplined reprioritization: less talk, fewer sweeping pledges, and a sharper focus on the work that shows up in cost, risk and revenue.

Shoppers kept buying while the politics turned

The clearest evidence comes from what people actually put in their carts. NYU Stern's Sustainable Market Share Index, built on Circana purchasing data across 36 consumer packaged goods categories, compares sales of products marketed as sustainable against conventional alternatives. Branded products marketed as sustainable now hold 25.4% of the market, up 1.6 percentage points over the prior year despite persistent inflation, strong store brand performance and economic uncertainty.

The growth figures are sharper still. Sustainability-marketed products accounted for 44.9% of CPG growth from 2013 to 2025. They grew 4.9 times faster than conventional products, posting a five-year compound annual growth rate of 10.9% against 2.2%, and they did it while carrying an average price premium of 26.6%. Nor is this one demographic: NYU Stern's Center for Sustainable Business finds every consumer cohort is increasing its purchases of these products. Its messaging research with Edelman adds that the claims landing best are about health, saving money and local community, and several resonate across political party, age and gender alike.

For a supplier, this is the number that matters. Your customers' sustainability-marketed lines are where much of their growth is coming from, and every claim on those labels has to be substantiated somewhere upstream. More and more, that somewhere is you.

The cost of standing still is now measurable

Consumer demand explains the upside. The other half of the business case is the cost of doing nothing, and that is where EY's new report, The Sustainability Value Bridge, earns its place. EY studied 15 companies to see how climate, nature and broader sustainability disruptions would erode financial value under business as usual. Its finding: profit could fall 25% to 50% by 2030.

The detail is what makes the number credible. In EY's consumer products cases, a single significant disruption, such as a flood at a production site, the loss of a strategic commodity or a major port shutdown, typically cost $50 million to $150 million, or 2% to 4% of EBITDA, and most companies absorbed three to five of those events a year. At one consumer company, problems with West African cocoa growing cut profit margins from 22% to 1%. EY also estimates that the cost of complying with sustainability regulation roughly doubles every five to seven years.

EY frames the response as a bridge with three spans: value erosion, value protection and value creation. Its argument is that executives do not need another sustainability investment proposal. They need to see how much profit is already exposed, and which actions protect and grow it. One company in the study found half its profit was at risk, and two-thirds of that exposure had gone unrecognized until cross-functional teams examined the data together.

None of this is new. Last year, in Corporate Sustainability: The Business Case, Rebuilt, we argued that the pushback was acting less like a retreat and more like a stress test. It forced companies to show their work and keep the initiatives that justify themselves economically: lower energy spend, less exposure to disruption, stronger customer retention. That has held. What has changed is the precision. Value at risk can now be put in financial terms, and the companies that come out ahead are the ones that quantify it and build sustainability into core decisions rather than running it as a side program.

A brand's value at risk runs through its suppliers

Look at where EY locates the erosion: raw material volatility, supply chain and operations disruption, rising compliance costs, brand and reputation damage. For L'Oréal, Unilever or Estée Lauder, most of that exposure sits upstream, in the ingredients, intermediates and packaging they buy. Every example in EY's consumer spotlight is a sourcing story. Carlsberg moved barley growers onto five-year contracts. IKEA built its own forestry expertise and wood traceability system. Danone rebuilt parts of its dairy model around local smallholder supply. In each case, the brand protected value by changing how it works with suppliers.

That is why supplier pressure is not easing, whatever the political weather. Once a brand's finance team starts quantifying value at risk, supplier data stops being a box to tick and becomes an input to sourcing decisions. EY makes a related point about existing programs: viewed through a value lens, their economic case is often stronger than anyone realized. The same holds for a supplier's carbon data, product footprints and EcoVadis scores. They are how a brand tells which suppliers reduce its exposure and which add to it.

For a mid-market manufacturer, disclosure is the mechanism that makes operational progress visible to the buyer. A GHG inventory the customer can rely on, a product carbon footprint that holds up to scrutiny, a credible CDP or EcoVadis response: these are what turn your work into a reason to keep you on the approved supplier list, and to grow the relationship as your customer's sustainability-marketed lines grow.

The case was always about value

The language around sustainability will keep shifting with the politics. The economics will not. Consumers are paying a premium for products marketed as sustainable, and brands are learning to put a price on the risk of doing nothing. Both pressures flow down the supply chain to the companies that make what goes into the product.