All of that money is kept by those companies to continue to grow and expand legitimate businesses.
Both of the current culprits mentioned above Host with Cloudflare.
Way back in 2018 the website ManyVids a competitor of OnlyFans put in safeguards to prevent any of this from happening to those who submitted videos on their website.
Sadly as mentioned it seems that the onus is put on Content Creators to protect the content that they hand over to a site like OnlyFans with the assumption of security.
But because of the super high volume of views that adult sites get there are very few other ways to monetize for adult site owners other than using banner ads.
Thank you for taking the time to reach out to me as well and I am glad I could help.
Discord — Servers Filled with OnlyFans Leaked Videos and Images As you may recall I wrote an entire on how easy it is to get free stolen content on Discord servers.
Chaturbate — Banner Advertisers on all Adult Content including OnlyFans Rips Of all the sites that cause stolen content to be distributed on the list I will say that Chaturbate is the least nefarious.