I think many people, even if they pay for the services, still torrent. It’s so much more convenient to have everything in Plex where it plays across all devices rather than chase down which app/device combo has the content you’re looking for.
I've torrented all of game of thrones, yet, always pay my monthly for the service
Despite UX improvements to Plex, and running a Plex server, it is still a fairly technical endeavor. However, that doesn’t mean the millions more of people who have Netflix, but not Plex, do not dream of a day where simply all video media is in one place.
Almost anyone I introduce to Plex is simply mesmerized and the growing community of shared Plex servers shows that it is taking off. The continued fragmentation of all of these exclusive streaming services is just going to drive more and more people back to DIY solutions.