A global integrator with hundreds of thousands of staff cannot price work any other way than through leverage. A small number of expensive, genuinely excellent senior people are spread thinly across a large portfolio, and the delivery itself is performed by a much broader base of less experienced staff. The ratio between those two groups is the margin.
This is not a scandal and it is not incompetence. At that scale it is arithmetic, and it produces real advantages: deep bench strength, presence in every geography, the ability to absorb a programme that suddenly needs two hundred people next quarter. If your requirement is genuinely that shape, a large integrator is the right answer and we will tell you so.
But the model has a predictable failure mode, and it is always the same one. The senior people who won your confidence in the pitch are not the people who will do the work. Their attention is a scarce resource allocated across many accounts, and yours gets what is left after the loudest escalation. The team you actually get is capable but junior, rotating, and structurally unable to make the calls that matter, because those calls were never theirs to make.
So decisions queue. Risk gets managed upward into a status pack rather than resolved. Scope disputes become commercial events instead of engineering ones. And the thing you bought — judgement, applied continuously to your problem — quietly stops being delivered somewhere around month four.