Supposedly, in the 1940s, when Arthur C Clarke (now mainly known as an SF author) proposed the idea of geostationary satellites [0] as extra-terrestrial radio relays, he believed that they would have to be manned space-stations because of the need to keep changing the valves that had blown.
If GEO becomes crowded enough, it's not possible to just send more hardware and park the defective one somewhere else and launch costs keep going down I wonder if we'll see more human serviceable hardware.
We just need a Terraform provider that maps provisioning to launching a Falcon-9, and deprovisioning to firing a photon torpedo at the satellite.
Sounds like a job for a fleet of orbital rocket boots.