Capitalism was an economic system based on ownership of the means of production by individuals competing on a free market. The Eighth Doctor was assumed to be a capitalist by several people in Spain. Fitz Kreiner branded Anji Kapoor a "capitalist pig" who was in turn surprised by how similar career communists and career capitalists were.
Capitalism usually has not value for life. Such as not providing oxygen in space stations and forcing people to buy it. Even worse, killing workers when they haven't been productive enough. However, thanks to the Twelfth Doctor, a rebellion was started and capitalism was no more.(TV: Oxygen)