People, particularly in the left, need to understand that the economy consists of people, all looking to maximize either their profits or well being in general, and you can't just increase the price tag forever, and expect people to just keep buying the product. It doesn't work in business, it doesn't work here.
I think there are those who are not interested in the economy and instead interested in maximizing their worldview, and thus the moral output generated from society. Money, economies and markets don't mean anything, only 'ethical' outcomes. With that thought, it is hard to justify this in the face of reality, as much as we want to be upstanding citizens.
I feel this is driving the minimum wage debate in the US, as an example.