The following is an excerpt from a Wikipedia article on Management Consulting

Management consultants are often criticized for overuse of buzzwords, reliance on and propagation of management fads, and a failure to develop plans that are executable by the client.

Irreputable consulting firms are often accused of delivering empty promises, despite high fees. They are often charged with "stating the obvious" and lacking the experience on which to base their advice.

These consultants bring few innovations, and instead offer generic and "prepackaged" strategies and plans that are irrelevant to the client's particular issue. They may fail to prioritize their responsibilities, placing their own firm's interests before the clients'.

Further criticisms include:

• Taking apart of the business in a drive to cut costs
• Only providing analysis reports
• Junior consultants charging senior rates
• Reselling similar reports to multiple clients as "custom work"
• Lack of innovation
• Overbilling for days not worked
• Speed at the cost of quality
• Unresponsive large firms & lack of (small) client focus
• Lack of clarity of deliverables in contracts.

We don't do any of that.