The inequality in wealth held by the Steve Jobs family, for example, is very very dangerous indeed. It means Apple sold us a 1000's and 1000's of train loads of stuff we really wanted to buy more than anything else in the world. This huge volume of new innovative stuff must have been so superior (how else did they sell us so much) that it was changing our world very quickly. Thus, the danger is in the runaway, wild, or rapid progress that accompanies huge wealth inequalities. Therefore, we would be better off with less dangerous product innovation, slower growth, more stability and less income inequality.