I love torrent, but it's legal used are cripple by corporate infra, so it's mostly florishing thanks to illegal stuff paid by shady ads.
What's the business model though? Most Russian torrents are about giving away copyrighted stuff for free.
UPD: I've checked what ads it shows me on Rutracker - it's VPN services and online gambling. Youtube and Facebook have shown me worse
If anything I have more sympathy for that mafia.
It's also of note that on Facebook I don't get many online casino ads, I get mostly reMarkable ads, there was one from Roli when they launched their new instrument, and others were mostly advertising stuff to me that I already bought elsewhere. I think it might be because I had banned the first dozen of such ads, and they stopped coming.