I have a couple of audio devices that are ~14 years old and working perfectly fine. If either of them broke then I'd want to repair them (unless of course the fault was fabulously catastrophic). Once upon a time even affordably priced equipment lasted way more than 5-10 years. Maybe it's a generational thing, due to my being on the wrong side of 50 :), but stuff used to be built to last for affordable money. Hell I'm still wearing the Seiko mechanical auto-wind watch I was given for my birthday in 1983, and it still (mostly) tells the right time and day.
Twenty years should be a minimum.
BUT the cost was astronomical as were the storage requirements for parts and the cost of the replacement parts. The oscilloscope I have (tek 7904) was released in 1972 and would cost about $100k now with the plugins I have in it. And that's because it was designed for repair. Versus a modern unit which costs around $5k, lasts 5 years and is disposable. Yeah that's not gonna wash. Also it actually requires some quite extreme skills looking after 40+ year old kit.
What you end up with is a $7000 iPhone and a repair industry where min charge is $500 for some obscure part because the universe has moved on.
Recycling and reuse is better and that's where we're heading. Even cars are going in that direction.
Anyway, the real trick with this of course is forbidding the serial number based lockouts.
Yeah, that is just downright spiteful scumbaggery.
For a washing machine or refrigerator, I’d say twenty years is the minimum. For a phone or computer? I’d say at the very least five, but preferably ten years from the last sale of a new, used, or refurbished device sold by them or their authorized resellers. Require security updates for at least twice as long, or when the manufacturer can prove all devices are out of use.