I can't comment as to any particulars, and obviously I know nothing, but a major shipping/delivery/logistics company is going to introduce tracking as a paid service beginning of next year. Oh, as an individual you'll be free to track your couple of packages - but if you're a big company tracking hundreds of shipments? Expect to pay per shipment, per time you track. And the first plans are of course only aimed at resellers and third party apps doing hundreds of thousands of tracks per hour (yes, literally - there's a LOT of packages going around you know), the intent is to monetize this towards smaller companies and eventually individuals, too, once live tracking is performative enough.
So, enjoy your "your package will be delivered tomorrow between 13:17 and 14:58" for free right now, because in a few years we'll be back to "it'll be there somewhere next week, probably....Unless you pay, then you get to know the exact time to within the half hour, because obviously we know, but we won't tell you, because fuck you".
To be clear, again, I know nothing, and this isn't about any particular company, it's just random gossip I've heard mentioned by, let's say, the butcher's son from around the corner. Nothing else. Of course.