Why do dropshipping stores selling kids fail in the GCC?

Almost never the product. What kills them is a rising cost per customer meeting a margin that cannot absorb it — the store is profitable at one ad price and underwater at another, and nothing on the storefront changed.

What actually kills them

The second cause is delivery time. A customer who waits three weeks does not buy again and frequently does not stay quiet about it, so the acquisition cost has to be paid twice for the same person.

Dropshipping trades margin for not holding stock, and the trade only works while traffic is cheap. For a kids and baby store in the GCC, the answer turns on one thing in particular: The customer ages out of every product they buy, so the catalogue has to follow the child or the customer leaves.

What is different about the GCC

The GCC is not one market. Payment habits, delivery norms and language expectations differ enough that a single approach underperforms in at least one country.

Payment preference varies by country more than most planning assumes.

What is different about a kids and baby store

The part nobody plans for is returns: if the supplier will not take one back, the store is the returns department.

Where a mobile app comes into it

Knowing when somebody bought 6-month clothing tells you what they need in six months, and an app is where that is acted on.