The problem in reality is that people have wildly different amounts of disposable income and that there are more and less important uses. Rich people use drast

The problem in reality is that people have wildly different amounts of disposable income and that there are more and less important uses. Rich people use drastically more resources. If you want to curb their resource usage with price you would need to increase prices so much that poor people can’t afford the resource anymore. E.g. you want to stop people watering lawns during drought, so you make water so expensive that rich people cannot afford it anymore, but then poor people cannot afford to wash hands, shower or flush the toilet anymore. One solution is to have the first x units of the resource cheaper, similar to progressive taxation.