“…The analysis of the structure of the audited financial market in the world and the empirical evidence demonstrate the existence of a high concentration of professional auditing services for largest international firms, better known as The Big 4, which has generated great interest in accounting doctrine to explain the reasons for the concentration of this market (Zeff and Fossum, 1967;Bavishi and Wyman, 1983;Craswell and Taylor, 1991;Walker and Johnson, 1996;Garcia-Benau et al, 1998 ;Wolk et al, 2001;Beattie et al, 2003;American Assembly Report, 2005;Abidin, et al, 2006Abidin, et al, , 2007Ballas and Fafaliou, 2008).…”