You're probably thinking of a few big consulting companies who by no means represent the best and brightest and are just resume fodder for many others. The turnover at these places is awful.

Just one example, a lot of target's tech seems to be developed in their Bangalore office: https://india.target.com/work/teams/targettech. Hard to tell how much, but I imagine that being a significantly better workplace than Accenture. I hope one of their developers sees this and can clarify the extent their team works on the app/sites.