Thank you for these. My main takeaway from it is that the (growing) package business is subsidizing the (shrinking) regular-mail business.

Also, it's mostly UPS and Fedex doing the most whining. It reminds me of the Far Side cartoon with the dog outside the window urging the sleeping owner "Puuut the caaaat ouuuuut".

Incidentally, that second article wasn't paywalled for me.