There’s nothing nebulous about it. Paramount owns the rights. They yanked Trek from Netflix and prime to promote their own paid subscription. Now that they got everyone they were going to get, they sold the rights off to another platform that probably demanded exclusivity. Paramount figures they’ll keep the subs and get a big fat check. What’s really annoying is that they’re probably right. People are ridiculous, and will likely keep paramount+ and now go subscribe for another service.