They might even get the post offices’ PO box rental percentages up if they weren’t the only “mail centers” that wouldn’t accept packages from the major common carriers like FedEx and UPS.
The bit about FedEx is especially stupid, as Express Mail is now just a relabelled FedEx service, and a FedEx truck backs up to the post office loading dock every day to collect/deliver any Express Mail shipments.
UPS tried a similar policy with their UPS Stores briefly, where they wouldn’t accept FedEx or DHL packages but customer outcry (and the resulting box rental cancellations) made them reverse their policies. So the USPS is the only service where your rented mailbox can only get USPS shipments. Idiots.
I know the postal services is in the constitution, but it's time to close shop. Most people could survive with 3 days of mail a week. Make it two and have 1 carrier cover two different routes. Announce you are closing in 6 years and the companies and the employees will figure it out, as well as the customers.