I really don't know what people can expect for cleaning between aircraft turnarounds. We've all seen the cleaners...3-4 people with a bags, rags, and one has a $49 battery operated hand held "vacuum" with a extender tube on it. I'm surprised they get what they can given 20 minutes to turnaround a narrow body.

These days airplanes are just subway cars that fly. It is what it is.