For what Accenture (and probably other similar companies) delivers, for given price point, i don't get how they are still in business. Results are always super

For what Accenture (and probably other similar companies) delivers, for given price point, i don't get how they are still in business. Results are always super costly, and often meh or okayish at best. The variability of quality of people is simply too big and this is completely on Accenture's side. Yes some locations provide reliably good quality, but Accenture doesn't have the same standards for hiring across the globe. Seen first hand, couple of years ago batch of folks from central/east europe was hired for long term cooperation, out of 20 maybe 2-3 were worth their salt. For rest, firing them on spot would be more time-saving than baby-sitting extremely junior clueless unmotivated crowd.