Could Wells Fargo’s recent decision to slash consultancy costs presage an industry-wise trend? Only time will tell. The eye-watering sums involved ($1bn/p.a.) were certainly not a surprise. Many a company blithely has stepped onto the slippery slope of consultancy and lived to regret it. The initial foray is almost always modest and innocuous: a little expert advice here, some technical help there. What harm can it do? None whatsoever, if that’s the extent of it. Even though