Capitalism is built on the belief that ownership creates value and thus entitles owners to some portion of the value created in perpetuity. In a free market profit should be driven to zero through competition. As a result capitalism requires constant growth.

And so in the same way 'it is easier to imagine the end of civilization than to imagine the end of capitalism' the idea that we could survive for even a year without exploiting the planet beyond steady-state seems so unrealistic as to not be mentionable.