[cflsystems]

You have to keep in mind nowdays shoppers do not go to site, add to cart and order. They go to site, add to cart, then go to another site and do the same and another site... They compare prices, shipping, trustworthy of site, return policy, etc and final decision where to place the order may come days after. So not necessarily abandoned cart is abandoned...
Customer may come back without being pushed with offers and such.