The problem IMO is not only the low incomes. It is also the high costs of necessary goods. Here i mean mainly the housing costs. People pay a lot of money for the land where they have place to live. Also there are a lot of costs for raw-materials and oligopolistic construction business. Land costs in farming, roads etc. When economy grows, grows also land value and raw-material costs, which eat the results of capital and labour use. Zero amount of labour and capital is tied to land and raw-materials. They are not products of the markets. Land is not capital nor it is product of labour. When money goes to land and other natural resources it doesn't create any demand, labour or capital. Before this issue is addressed, i believe nothing will change, because wealth does not trickle down and improve household self-sufficiency. Wealth just moves from one land owner to another.