Also they won't do this because business flyers usually don't check bags. That way they won't be lost (by the airline) and so control over their destiny is reta

Also they won't do this because business flyers usually don't check bags. That way they won't be lost (by the airline) and so control over their destiny is retained by the flyer. I've done quite a few international trips, even week long trips, without checked luggage. Having your luggage get lost can be a real time consuming hassle and one you don't want to deal with when on a business trip.