Windows like we have? It's just two panes of glass with a gap between the panes for air to act as an insulant.
Even with plastic windows, you can have two panes with a gap and it will work too.
I believe you. I just really struggle to comprehend that not being standard in parta where you get snow and cold. Or it being considered "extra". It's not alien technology. It's two panes with a gap between them. That's it.
I see. I think I'm starting to understand. It makes sense when you mention that energy has been very cheap.
Why spend money on new windows when the difference in the energy bill is just a few bucks.