Plex Arcade Questions....?

Plex Labs
2

The subscription fee isn’t just about the included games; Plex licenses the streaming technology (Parsec) it uses to provide the functionality on a per-user/per-month basis (check out the few posts above the one linked for some additional context). It probably wouldn’t make sense for non-Plex Pass subscribers to subsidize subscribers. Plex Pass subscribers are entitled to a discount though.