Obviously I don’t use them, I’m just reading about how they work. And they seem to give you access to other hosters instead of hosting all the files on their own servers, right?
You haven’t explained shit so far, all you did was say again and again “Debrid”, “VPN”!
Which are just services, but you said zero about the infrastructure behind running them (besides mentioning it must be cheap). You could clear this up in a single sentence.