I run Survicate - targeted website survey app. We deal with many ecommerce websites and they do use surveys for cart abandonment. You have nothing to loose - after all, they are leaving, and at least you will get some feedback. Plus, with Survicate you could try to stop them with some incentive.
I would recommend trying.
My name is Kamil and I run an app that helps you get to know your customers with survey - Survicate.
We have many customers that do use cart abandonment survey with success - they find out friction points and fix it. Plus sometimes they manage to persuade customers to stay and finish the purchase with offers and other calls to action.
Definitelly worth trying.