system
Given the following post, respond as if you're commenting on Reddit:
human
[Ghostbusters] If ghosts are so obviously real, visible and pervasive, how are the ghostbusters the only ones?

The ghostbusters live in a world where paranormal entities are much less subtle, causing large amounts of damage to public property and being responsible for a large amount of panic and harassment. They're constantly clearly witnessed by people (there's one jogging in a park in broad daylight, for example), so why has no other scientist or institution done anything about them?
gpt
The Ghostbusters created breakthrough technology to allow them to be able to catch ghosts. 

Not even considering the years of research they invested to find the scientific principles behind the ghosts themselves. The have backpacked sized particle accelerators with the power of small nukes they use to catch ghosts. Those things are usually hundreds of meters long and need a constant high voltage energy supply to work.

Simply no one else has the technology and knowledge to do what the Ghostbusters do.