I guess it’s a bit hit and miss. I had a laptop delivered in 5 days from Taiwan to the UK thru Fedex. I’ve ordered an HDMI module that’s taken the same amount of time to come from the Netherlands, seems FedEx gave up when it was within 30 miles and handed it off to Royal Mail who are delivering it tomorrow.
I’ve always wondered about the approach. If you buy a car then you can usually expect to be able to buy genuine parts for X years, followed by OEM parts for Y years.
If they redesign, it might make sense to open source the design of the older model so those that are content with current design can still buy or even make parts themselves. I guess the issue will be whether you can get those parts, like a 4:3 screen in the future.
I’ve bought mine this year, if I can keep it going through upgrades/repairs until 2030 I’d be happy, if I can get to the point that it’s a ship of Theseus, even better.