Wealth is concentrated in few hands (No. 1), those who own capital (land, housing and financial asssets) because the returns on capital tend to grow faster than the economy as a whole. As an example. The wealthy tend to have higher savings/investments which generate more wealth.. 
I once met a Korean professor at NMAIST and he said he appreciates that Tanzanians are very good at manually designing and making products in eg. Capentry, welding, tailoring, moulding etc. But he said THAT WONT TAKE US VERY FAR the future is COMPUTERISED MANUFUCTURING. 
