Robots, not gonna happen as far as domestic is concerned.
Way too expensive.
We’ll all be fine for years and years to come.
Window cleaning is no where near a big enough market for robots.
It’s so cheap to use human power anyway, there is no real incentive for robots.
Even with commercial, you’d still need a water source, a lot of technology to get the robot to move around and actually clean a window properly. Let alone over three story work. It just wouldn’t happen. Far to dangerous, a bit of wind and the pole would be all Over the place.
I think we forget that window cleaning is a very small, trivial industry. The cost to businesses to use a human window cleaner is minuscule, there really is no point in robots taking over. No ones gonna spend countless millions on R&D, design and manufacturing some little robot with a pole driving round people’s house, opening gates, stepping over objects, cleaning a window properly etc etc.
WFP will evolve, but humans will be the users, not robots.