2) The plan to democratize investment is complex. I see the question as being "what will the financial system of socialism look like?" I know what it *won't* look like. For 150 years the answer from Marxists has basically been "there won't be a financial system" and I think that's clearly a non-starter.
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CB: How now , Boddi ?
I've heard Marxists say that socialism will have cost accounting. The planning of production will certainly involve counting up a lot of things by the planners. We don't want "finance", the magic of money as indirect counting. We want direct counting of needs and means to meet needs.
As to commodities, the problem with the historically developed commodity exchange system is that it leads to anarchy of production. Commodity producers "isolated" from each other ( private producers) inevitably and often produce a total supply that doesn't fit demand. For, these private producers' aim only to increase their private wealth, to appropriate privately. The critical change we need is that the aim of production be to produce "social" wealth, wellbeing for all, to a woman, child and man. Aiming that way will make a better fit between demand and supply.