Professionals?

I don't think there are professional RTV stars. If someone appears on more than one tv show i just think its because the producers saw that a lot of people watched the show and followed the star. If they star that person in their show hoping to attract viewers who might watch the show because they have seen the person in a different show and are curious as to what role they are going to play in the new show. I'm sure they have more experience but i don't think it makes them a professional. There are so many different types of reality tv shows that they most likely wont even reappear on a similar show. I think it depends on how you view reality tv show and whether you think its scripted or unscripted. If it's unscripted wouldn't it mean the star couldn't be a professional because they dont know whats going to happen?