It's because the taxes are ridiculous in Switzerland (well, at least in most regions). They're pretty "normal" in France, I mean there are worse countries I think. But I don't blame them for not wanting to pay thousands of euros each year, if they can afford to move, they should. I personnally couldn't care less if they're based in Paris or Neuchatel. Plus they all have somewhere to live in France -I think Richard and Gaël have a flat in Paris, Gilles is with his girlfriend, and Jo at his parents in Le Mans, he probably has somewhere to go in Paris too.
I don't think they have to spend a given period there, they only need to have their principal address there, no ?
Yeah, I forgot to mention it, there were three or four "Swiss" people with a Swiss flag the friday, they were screaming 'Allez la Suisse !' I didn't know about this show they were making, we all thought they were Federer fanboys or something. It was funny at first, but it got pretty annoying quickly. Canal + est assez "lourd" et pas très malin d'une manière générale