Since when has any huan said"I have enough. I'll never purchase another product."
I am thinking on this way I have only 2 plasma 3D TVs and I do not need 10 more I have my own appartment and my own villa and another appartment at the sea and I am not thinking of purchasing another real estates that only to be a passive for me. I also have only one PC + only one laptop + 1 smartphone + 1 tablet and I am not planning to replace them soon.
Nevertheless it is true that there exist greed. In a future immortal society it seems that rules will have to be considered, that will allow the purchasing of an exact number of the different types of goods in order not to be depleted the natural resources.
The 3000 people without homes if are immortal and if they can work, they will be able either to accomulate their money and buy a house, or take a credit, buy a house and play their credit after only 10 - 20 - 30 - 40 years, which is nothing in terms of the enternity.