The E6 Service Hub is about facilitiating and providing RRR services. It does no own the business services in the RRR field and it does also not run these businesses.
The services are drawn as singular entieies, in real life there will be multiple instances of some businesses, like the repairers.
Multiple service hubs might work together in creating or collecting relevant (repair) documentation. Geography will play an important role when a physical visit to a party is relevant. Repairers in neighbouring hubs might be of interest for residents, especially with high value products like tablets or laptops or expensive home appliances.