If customers ask why I don't use ladders, I say that with wfp, if I trip and fall over I might break a wrist or ankle and the pole might damage a car or some part of the house which I have full insurance cover for, but If I fell from a ladder, the chances are that I might die.
Now I like window cleaning but I would rather live a little longer than take the risk.
As with every other industry the world has known, at times more advance equipment is devised than can do the same job faster - safer - better or any other valid reason.
When such equipment or working practices are used, there are always the old die-hards who won't recognize its benefits and will slag off the new ideas.
Remember you are not only window cleaners.
You are a business man/women, you are running a business, it might not be a global enterprise but it is still a business and the most important thing you have to do, is to make sure that you can make a profit.
So when new equipment or working practices arrive, and these might have a impact on your profit line, you either have to use them or have something in place to counteract them.
If you don't then you won't survive.