The person you are asking doesn’t say that they looked and found the service through ads. They say that the cleaning companies spent 35% on marketing. And therefore everyone that uses these services pays 35% more as a result. Not only customers that find the service through ads.
It really does read like they booked through a booking intermediary although the advert part is less clear. In either case, I prefer a personal recommendation if I can get one and we both gain by avoiding the intermediary fee.
