Bags of Scope?

The 'Bags for Life' campaign in UK supermarkets doesn't appear to be working (https://www.theguardian.com/environment/2021/apr/18/supermarket-bags-for-life-must-cost-more-to-cut-plastic-use-urge-campaigners). The campaign aimed to reduce the number of times people paid for single-use plastic bags. It was part of the drive to reduce the use of plastic packaging. Fewer, single-use bags are used but the government will increase their price from 5p to 10p each, to maintain this downward trend. The trouble is that 'Bags for Life' can cost as little as 20p in some stores. They also contain much more plastic than their single-use counterparts. It's only an example, but Marks and Spencer sold 6 times more 'Bags for Life' in 2019 than they did in 2018. Environmentalists think 'Bags for Life' have mutated to become 'Bags for a Week' and are currently much too cheap.