1) Every dark store is limited by the space and hence the # of orders they can process. I believe #Blinkit mentions it in their pitch to franchisee prospectives to "open" a dark store.

2) Combine this with the density of our top cities, the purchasing power that resides in them, and it makes sense to double down faster to consolidate their hold.

3) Competition isn't just to get consumer attention/wallet, but also for the right location & space. After all, real estate is damn expensive in these top cities.

4) I believe Qcom is going for the top 10-15% of eCom too with the "area warehouse" and 30 min delivery for certain items. The whole marketplace model is being done for the same (in addition to unlocking cash that is otherwise tied up with PO/inventory)
#Blinkit