Where I live (popluation 20,000+) there are several other windys, but there are still plenty of houses where the windows haven't seen a clean for years.
Many people here either can't afford or want the services of a window cleaner. Those that do generally don't want them done regularly, so it is tough to find good customers and to stay in business once they have been found.
That said, I am still picking up new work, albeit very slowly, but it is certainly much harder than it was a year ago before I left Britain, when work was flooding in. I am very grateful with what I have and take none of it for granted.
John