Well, yes, of course there is such a thing as theft of service, so, I guess this is technically what he is doing, but if I was in business class, I don't think I would say anything unless he stank or had a cell phone

While we're still in a reprimanding mood, somebody tell those riders who sneak into the first class cabins on the TGV... Actually, this happened once, in Morocco - I was in first class on the train from Casablanca to Marrakech, and a party of three men got in the cabin with me - didn't mind at all, and then the conductor came around and sent them back to the cattle cars - I actually felt bad for them