Chii chinonzi MBB uye chinomiririrei?
Context:McKinsey & Kambani ikambani yepasi rose yekubvunza manejimendi yakavambwa muna 1926 naUniversity of Chicago purofesa James O. McKinsey, uyo anopa mabasa ehunyanzvi kumakambani, hurumende nemamwe masangano. McKinsey ndiyo yakarebesa uye yakakura pane "Big Three" management consultancies (MBB), makambani makuru matatu epasi rose ekupa mazano maererano nemari. Kambani yacho inonyanya kufunga nezvemari nemabasa evatengi vayo.  Mukutungamirirwa kwaMarvin Bower, McKinsey yakawedzera kuEurope muma1940 nema1950. Muma 1960, Fred Gluck weMcKinsey - pamwe chete naBruce Henderson weBoston Consulting Group, Bill Bain weBain & Company, uye Michael Porter weHarvard Business School - vakachinja tsika yemakambani. Chinyorwa cha1975 chakabudiswa naJohn L. Neuman weMcKinsey chakatangisa tsika yebhizimisi ye"overhead value analysis" iyo yakabetsera kuderedza maitiro ayo akabvisa mabasa akawanda muvatungamiri vepakati.
MBB inoreva "Makambani Matatu Makuru" anopa mazano okutarisira. Kubva mundima yacho, hazvina kujeka chaizvo kuti rinomirirei, asi McKinsey inosanganisirwa muMBB sezvo iri iro rekare uye rakakura zvikurusa reboka racho.