In a comic twist UPS (not USPS) is well known in my locale for sending out trucks making "2 day" deliveries with just slips, no packages. That way they can't get refund requests for failure to deliver on schedule. Holy cow do they get embarrassed when I fling the door open and catch them. "well, uh, err, sorry sir but we don't actually, uh, have your package, not just yet, but I do have a delivery failure note and I promise to deliver it for real tomorrow"

(edited to add: this almost solely happens around christmas rush time, another reason why I really don't care as long as it gets here before the 24th)

I subscribe to prime because on long term average its way faster than supersaver so I didn't get the guy in trouble, besides he's kinda my lifeline and pissing him off over nothing would be a dumb idea.

Last mile delivery seems to be a natural inherent monopoly, whats keeping the competitors alive is the extreme variability in station-station shipping where competition can actually exist (like milwaukee to chicago, not house to house)