Because internal organization experiences added bureaucratic costs, the firm is usefully thought as the organization of last resort: try markets, try hybrids (long term contractual relations into which security features have been crafted), and resort to firms when all else fails (compatatively).

Oliver E. Williamson (1999, p. 1091) cited in: Steve Cropper (2008) The Oxford Handbook of Inter-organizational Relations. p. 355.