Social Darwinism and Diversity

Social Darwinists are often too concerned with justifying the accumulation of personal wealth at the expense of others to recognize an underlying value shared by Capitalism and Darwinism--Diversity.  In Capitalism, Competition diversifies the Market, and, hence, counters a tendency towards Monopoly.  In Darwinism, Variation is a means towards the generation of superior types.  However, Variation consists in population increase, which, as Malthus argues, strains resources, and, thus, conduces to Scarcity.  Conversely, therefore, population control as a correction to potential Scarcity is counter-productive to Evolutionary processes.  So, the relation between Capitalism and Darwinism is more complicated than it is often conceived to be by Social Darwinists.