"introduction of new materials" This is where fun starts. "New" materials look like crap and become worn down in a few decades. Meanwhile "old" materials look

"introduction of new materials" This is where fun starts. "New" materials look like crap and become worn down in a few decades. Meanwhile "old" materials look expensive and pass century test. One can argue "new" materials are cheaper, but buildings still cost awful amounts of money so it likely didn't help.