The bone idle can stay bed all day for all I care, if they want to waste their lives away then they can. The permanently needy (I presume you mill through illness or disability) will begin to have their needs met because meeting needs will be the purpose of production and distribution of goods and services.

Greed, is in many ways a product of capitalist society - all human behaviours are to some degree a result of historical and immediate conditions - the competitive nature of the job market and competition for goods and services, the richer you are the more stuff you can get irrespective of physical need and often real desire. For humans to advance this needs to be recognised and we need to go beyond it.

If we are using idealism in the derogatry sense I say right back atcha. It is idealism in this sense that capitalism can ever become humanised (peaceful, most needs met) it never has been so why do you think it will be one day?