In my experience over the past half-century it appears the building construction industry has done well by making more and more windows at ever increasing profit margins. When working as a kid in my father's shop during the 1950s and early '60s it seemed like the inevitable march of modern progress. But then in the mid '60s we began to focus on caring for our customers' older and historic homes. It was clear that the greater industry was leaving behind a crying need for taking care of all the existing windows, so our customers were happy to find that our shop had the traditional knowledge and skills to do it.
Remodeling
Source: TRADITIONAL BUILDING