Re-Heat,
By the same logic, wouldn't people have booked return flights ex. NY in the first place?
That would negate the need of having to book another flight ex. Paris. Especially as it's a new airline and I doubt the average person would think 'hmm, OpenSkies' first flight coincides with my return trip, I'm going to only book a trip out with airline X, then book the return with OpenSkies'.