That's part of the business plan of most consulting busineses and especially of big name consulting companies. Principal consultants, who actually really know

That's part of the business plan of most consulting busineses and especially of big name consulting companies. Principal consultants, who actually really know their shit, are called in for the contract negotiations. Those are of course not the folks, which you get to work on the project. The actual contractors are usually rather junior, often fresh of a plane and range in quality from quite good to absolutely abyssimal. With big name consulting companies they can still be billed at a daily rate of 2K +. In other words, and less politely put, the consulting business is pretty much a bait and switch.