jack-
Ttosca - I think you'll find the USSR was run by a grand plan
Not really, no. There was no blueprint for Communist USSR. The details were worked out as it went along. The idea was a good one "To each according to their need, from each according to their ability". However, for various reasons, not least of which the Soviets were under attack, a deeply centralised state was formed. From the moment you have unaccountable centralised power and lose democracy, you no longer have a socialism.
I'm not convinced by the idea that an economy can be run by people acting for social good.
It's not about charity. It's about producing things which are needed and that the majority of people want. At the moment, you could have thousands of workers working in a factory for an expensive car which none of them can afford. This occurs because production occurs to profit, and it is still sometimes profitable to produce cars which 1/10,000th of the population can afford for a high price, than it is to produce a car which everyone can afford for a lower price.
Assuming that you can 'persuade' everybody that acting for 'social good' is the thing to do - how does each individual know what action to take?
Who does what work can be determined by local democratic councils. The community decides what is needed and people work out how it is to be made.
I struggle with ethical shopping choices & I really do try. Balancing organic, local, free-trade etc. is a head-ache. Imagine if every action was based on perceived 'social good'. Which job to take? how many children to have? Whether to be a working mother?
I agree there is a difficulty there. That's because Capitalism is necessarily amoral. You can try to shop 'ethically', but then you're also likely to pay more for your goods. Sometimes it's not feasible to act 'ethically' when you simply can't afford it. It's more 'ethical' to take the train and pollute less and free cities from cars to make them friendlier to pedestrians. A poor person can't make that choice, though, if driving a car to work is three times cheaper than taking the train because a privitised rail system extracts maximum profit from what is an essential public service and exploits its monopoly.
So I don't think 'ethical Capitalism' is a long term solution, as well intentioned as it is.
As for businesses - how will they decide - how much to pay staff? how much to charge customers? What products to design? Where to manufacture?
The staff are the business - or at least they will be when the public own the means of production. There is no split between the two, that is the point. They will be paid as much as everyone agrees they should be paid. Since there is no need to make profit, they can be paid, in theory, as much as the value they produce. However, they may be paid less in order so that the company can invest in order to expand or research. Alternatively, there may be a different system altogether where people aren't paid a money wage.
BTW - You can kinda factor 'social good' into capitalism by charging for externalities. Whilst consumer power can often be a force for social good (helped now by the Internet).
I'm sort of familiar with that theory, but I don't know much about it. AFAIK, you'll need heavy state intervention in order to impose taxation and penalties to influence demand and prices. The problem is that the state has been considerably weakened in the past few decades and is set to be further weakened. Furthermore, Capitalists will always fight for 'free-market' libertarianism - at least until they need to be bailed out by the public.