That's not necessarily true. A viewpoint is that the sales they are securing wouldn't have been made otherwise. For example, a website about high end electronics that is supported by drop-ship based ads for product purchases. Those sales might not have been made were it not for the visitor going to that site.
Also, an argument could easily be made for all the items on Amazon that are fulfilled my the merchant as being the equivalent of drop-shipping because Amazon is basically listing stuff that others are selling and shipping on their behalf.
Also, an argument could easily be made for all the items on Amazon that are fulfilled my the merchant as being the equivalent of drop-shipping because Amazon is basically listing stuff that others are selling and shipping on their behalf.