Schumpeter's Simile for Capitalist Mobility
(p. 156) In fact, the upper strata of society are like hotels which are indeed always full of people, but people who are forever changing.
Schumpeter, Joseph A. The Theory of Economic Development: An Inquiry into Profits, Capital, Credit, Interest, and the Business Cycle. Translated by Redvers Opie. translation of 2nd German edition that appeared in 1926; translation first published by Harvard in 1934 ed. New Brunswick, NJ: Transaction Publishers, 1983.