Apple must open iPhone to alternative app stores in Australia starting March 1, 2027, after Epic Games ruling
(www.judgments.fedcourt.gov.au)
I didn't know about the DVD region thing. I once worked in retail (Dick Smith Electronics), and we sold region-4 locked DVD players. However, our POS had region unlock instructions in the product description, which I would print and attach to each and every sale.
I'm swear there's still carrier-locked phones at OfficeJerks. Just the pre-paids.