On this one specific point about maintaining period properties
Cement, despite being ubiquitous in modern buildings, wrecks old buildings/causes damp etc/often necessitates repeated costly repairs far in excess of what it would have cost to do it right earlier
The are lots of lime plasterers out there, it's not that difficult
I'm not saying you are wrong. I'm just saying there are hundreds of thousands of Victorian houses in London alone, and I don't see them being repaired with lime plaster.
They are essentially life expired and people do what they can to keep them going.
On this one specific point about maintaining period properties
Cement, despite being ubiquitous in modern buildings, wrecks old buildings/causes damp etc/often necessitates repeated costly repairs far in excess of what it would have cost to do it right earlier
The are lots of lime plasterers out there, it's not that difficult