Supermarket operators not behaving as they should need to analyse whether they have consumers' best interests at heart, Commerce and Consumer Affairs Minister David Clark says. In a draft report released this morning, the Commerce Commission said the duopoly of Foodstuffs and Countdown was working against consumers and food producers, and stifling the chances of further bigger players coming into the market. The Commission will next seek feedback from the public and the sector including a consultation conference from 21 to 24 September, with submissions closing Thursday 26 August. Consumer Affairs Minister David Clark responds to the Commerce Commission's draft report. Photo: Marika Khabazi