It's not a place for real consultants. The few real management consultants that were hired didn't last long, and staff turnover is huge (25-30% in the period that I was there). There is a lack of strategic direction and a need for strong leadership that can make tough, consistent decisions. There was too much focus on getting things sold at any cost (unrealistic timelines / large discounts), leaving the project lead with the hard task to deliver on budget and often without the resources and/or resources with the right skills.
People are not held accountable, with mediocre work and wrong behaviours not being addressed. It is therefore no surprise that the old nucleus of non-consultants is still there whilst more recent hires have looked elsewhere after a short lifespan at the firm.