People in this country do not like change and thats a fact, you still have the old brigade who want steam trains brought back.
Supermarkets should be closed down and the old reliable corner shop who used to close on a wednesday afternoon should be the only shops allowed.
This country since the industrial revolution has always objected to change.
In 50 years time, if there was to be a new method to clean windows, you would have people up in arms because they want it done the olf fasioned way (wfp).
Cleaning windows using a squeegie or a wfp has the same effect if they are used correctly, the window is left clean.
If you do not know how to use a squeeger or wfp then the end result is going to draw criticism from the customer, and the tool you are using is going to take most of the blame.
With wfp, the major drawback in customers eyes, is the windows are left wet after they have been cleaned, if the windows where left dry, then most customers would be happy.
Mind you you would still have some old die-hards who still perfer their windows cleaned with a shammy let alone that new squeegie thingy!!!
I personally I don't care what a cleaner uses to clean windows, but I do object when a cleaner dies when there was no need.