Why do we even need organisations for consumption?
Like production, consumption is also a social activity. Decisions about what we consume have an influence on others in society and therefore we need institutions for organising the planning and coordination of consumption.
Having consumer councils and federations is necessary to enable everyone in society to participate in planning the economy by providing helpful information to workplaces about what to produce for the year, any changes, and to organise production and the division of jobs.
Consumer councils are also necessary to enable all citizens in society to make proposals, deliberate and make decisions around local public goods. It is very difficult to do this within the market system without the government taking on the role. This still leads to an undersupply of public goods.
A consumer council could also be combined with the political system and act as the local primary level decision-making body for political decisions. For more, see participatory polity