Any service failure relating to these dispensers that is not resolved immediately by the property providing product (be it new dispensers or the old single use bottles), and I will be demanding some sort of small compensation and filing complaints with the corporate office.
The only way this stupid move will ever be somehow at least countered with solutions (single use bottles upon request) will be if people complain when service failures take place.
I think proper providing of adequate shampoo in a functioning dispenser or single use bottle is rather important in a hotel room at a mid market or upper end hotel chain. This isn't Motel 6.