Ask yourself this do you know why many ladies remain silent about their working conditions at Dennis's houses probably because of the way Dennis responded to Kitti. I think many just do the best they can and hope for the best.
Getting better wifi, a pool, more light signage is trying to make the brothel better isn't that a good thing and maybe more profitable?
Dennis showing restraint by not firing Kitti? Lol. As long as Dennis makes money from her why would he fire her? Besides if he was so upset at her she would already be long gone he has over 500 women working for him so losing one would hardly effect the bottom line