The apparat of Capital

In my novel The Sky Road the heroine, Myra, sees the skyscrapers of New York as housing 'the apparat of capital'. I've just found again the passage that inspired this:

Take the word bureaucracy literally, it refers to those working in bureaus or offices. The observable fact about the socialist economies is that they employed far fewer people in bureaus or offices than capitalist economies at a comparable stage of development. Capitalist cities are high-rise, their skylines dominated by office ...