Post-scarcity is a socialist term. It came about from futurist elaborations on Marxist materialist ideology. The reduction of labour to the minimum necessary in a society is one of the tenets of communism in order to reach post-capitalism. Certainly by technology, but also by diverting the products of labour, not for the profit and enrichment of the capitalist class, but for the provision to the needs of all society via free distribution of goods and services to all. According to Marx socialism is a necessary stage to reach communism, but communism doesn’t mean the disappearance of socialism.