Every marketplace should strive to drive higher-frequency usage, particularly in the early days. Sometimes the way to do that is to actually aid the supply side in lowering their transaction size so that the product becomes more compelling for the demand side. Liquidity is key. Making sure that transaction volume is thriving is more important to a new marketplace than getting the largest revenue per transaction.
A cleaning service model, on the other hand, is more challenged due to the repeat nature of the interaction between the same party. Once trust is established through the platform, it is just as convenient to call the same cleaner directly the next time. After the marketplace creates an initial match, there is little reason for either side to stay on the platform. For that reason, these types of services work much better using a lead-gen model, where revenue is based on leads and not transactional.