Fortunately, as far as I'm aware, the legality of whether you can provide some service is not based on what the majority use-case is. Otherwise, cryptocurrency would probably be illegal immediately, as I'm pretty sure the current majority use-case is drugs and ransom payments.

> as I'm pretty sure the current majority use-case is drugs and ransom payments.

Pretty sure based on what?

I wonder if Plex could be in hot waters though. I guess they've been working hard trying to pivot to providing content themselves with a subscription but I'm sure 90% of the Plex use is still for hosting pirated content.