: : Investment - the building of factory etc is still necessary. The factory isnt 'eaten', its the product that is - so somewhere along the line investment decisions are still going to be made and investment will still enable production.
: SDF: Even under capitalism, people could just volunteer to build factories from their own private stocks of raw materials, and no investors would be necessary. Moving money around is not necessary for people to build things.
Don: Under capitalism, people don't do this unless they expect to create a company where they could make a profit.
Don: It is not clear to me why anyone under socialism would do this kind of thing on their own (assuming to force is used to help them "volunteer").