What is an Internet Cleanup Company, and do they operate as a SaaS business?

Internet cleanup companies help people and businesses remove harmful, false, or damaging content from the internet things like fake news, revenge content, or threatening posts made to blackmail or go viral for someone's personal gain.

I'm trying to understand:

1. How do these companies actually work? Do they contact platforms directly, use legal tools, or something else?
2. Is this a SaaS model? Do they charge monthly subscriptions, or is it case-by-case?
3. Starting one in high-risk regions In some countries, people weaponize the internet to threaten others or force content viral for leverage. If you've built or work at a company like this, what are the key steps to launching it in such an environment? What licenses, tools, or legal frameworks do you need?

Would love a simple breakdown explain it like I'm five but with enough detail to actually understand the business model.