If the outcome is the same then the fees shouldn't matter to the client in the long run. Said differently, if the client who pays the management consulting fee gets the same return out of the service, why do they care?
Now, what may end up happening is that some other management consultant vendor in the market comes in an says "ya know what we're willing to do the same work for less" (which means their margin goes down). This could indeed drag their pricing down.
> Interesting times on vendor contract negotiations these days.
For sure.