I wish I could buy things that are expected to last a lifetime. The only things I've purchased in recent months that fall into that category are my cast iron pan and some hardcover books.
I do not know if there is an economical way to repair them, I'd never thought about it until now.
I actually happen to work in a printing house, but what I stated is something that was explained to me years ago. I'm in the software development department, but I'll ask around in the printing department and see if I can get any clarification. I do wonder if that information is local to our country, or to specific books, it was explained to me in the context of a hardcopy of Journey to the Center of the Earth falling apart. The book was likely printed locally as it is in our local language, not French.
Durable doesn't necessarily mean the product will last eternally as built.
Books usually need to be re-bound and re-covered, pieces of furniture need to be repainted/revarnished, Electronic appliances may need component replacement (capacitors, belts, etc), etc
Yes,this represent some efforts and still have some ecological impact, but being able to maintain an item that, at its core, is still original is a far cry from producing a brand new one.
But to do so, the product needs to be designed as maintainable and reparable, preferably even beyond the manufacturer support period (by using generic and easily obtainable components for example).
It’s not about one single synthetic benchmark.
A 10 year old system is going to be much worse - slower RAM, worse GPU, much slower disks (and almost certainly disks, not SSD)