There is a risk in practically anything we do.
Yes, I am a careful driver, but I have been involved in accidents. Yes, I use a ladder, and have fallen. It happens.
I am not knocking anyone who uses the modern methods, but it is always possible that someone can trip over a hose, the wind could suddenly catch one off guard, causing the operative to lose control and/or drop their pole on someone's head, etc. These things happen as well.
I am not being critical, I am simply pointing out that whatever way we go about our business, the unexpected can, and sometimes does, happen.
In 14 years of window cleaning, I have had 4 falls, ranging from about 7 to 15 feet. In the worst case, I walked away with no more than a couple of scratches and minor bruising.
I agree that I have been very fortunate, and it is with this in mind that I now constantly risk assess and take my time to position my ladders correctly, and don't climb until I am satisfied that it is safe to do so.
John.