Currently, there is no formal or mandated monetary threshold applied to determine what is, or is not, considered material in the sustainability context. Many companies, especially large publicly traded ones, identify their own unique set of sustainability priorities on a regular basis, and include them in their sustainability reports and related disclosures.
This is an opportunity for collective action to complement corporate action. Such collective action will be more effective if closely coordinated with individual actors as well as broader umbrella sectors, as in this particular case.