text: Under the presumption that the postal monopoly applies in its clearest form only to the final delivery process , where scale economies are likely the greatest , the worksharing notion is that a discount should be offered to mailers or competitors1 who do portions of the postal work and then turn the mail over to the postal service for completion of delivery .
  
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  Under the presumption that the postal monopoly applies only to the final delivery process , where scale economies are greatest and insurmountable for small businesses , the notion is that a discount should be offered to competitors who do part of the work and then turn the mail over to USPS .