Retail stores rarely carry a phone older than two years, as long as they push new phones every year, people will be buying those phones.
OEM's could have like 3 battery types, mass produce these 3 and offer battery replacement for maybe 30 bucks or less? OEM's could have like 3 phone designs and update the internals, making each screen replacement maybe 50 bucks or less? Instead each has unique screen, motherboard, subboard and battery combo. My 10y/o nokia has the same battery as a new one, they cost like 5 bucks each.
Needless to say I love the EU for bringing back user serviceable batteries, that's a great start.
What's going on in Thanos' head in all that B-roll