Earlier quoted context omitted.
This is not just an issue with housing. Virtually EVERY product is built with less long-term quality. I collect antique espresso machines. Some of these are highly sought after because they use big, heavy, high quality components: big brass boilers, copper piping, stainless steel enclosures and big brass groupheads. Compare that with many flimsy, plastic machines today (which rarely last more than a couple years), an…
It's called Planned Obsolescence: https://en.wikipedia.org/wiki/Planned_obsolescence
I mean, I'm sat here in my living room, place was built 1798 (relatively modern), near as damnit everything is original. Stone floors. Stone fireplaces. Stone walls. Lath and plaster ceilings. Lime plaster.
They knew what they were doing, this shit is built to last.
These days, they also know what they're doing, but a house has a shelf life of 30 years, so you can tear it down later, not feel bad, and stimulate the construction industry. In theory. I. Practice people live in leaky shoeboxes made of twigs, paper and tar.
Finally, the insurance industry drives this. Ever try insuring a 100 year old slate roof in America? Good luck with that. They'll insist you rip it off and replace it with tar shingles, because no roof more than 20 years old can be any good.
My other property has a 13th century stone roof (limestone, stacked), and it's barely been maintained and is in perfect nick after 600+ years.