Answer: They all emerged as a reaction to the harmful flaws of capitalism.
These ideologies share one important characteristic: they all emerged as a reaction to the perceived flaws of capitalism. Severe inequality, marginalization, exploitation, unfair wages and social dissatisfaction are all considered enormous problems of capitalist societies. During the nineteenth century, thinkers attempted to address these problems by looking for alternatives to capitalism. Utopianism was one of these alternatives, popularized by Robert Owen in England and Charles Fourier, Henri Saint-Simon and Étienne Cabet in France. Socialism and communism were also proposed, mainly through the work of Friedrich Engels and Karl Marx.