They have so much cash that they are not going broke soon but may never make a full year profit again.
Companies adapt. FR has pots of hard cash which a lot of airlines are short of. They have the power to change their way of flying. Obviously it would be very hard and they would not be able to make drastic changes but if we look at their route map, we will see that they serve little major international airports, and if so not on a great scale (LGW, MAN tec.)
If they were to expand, which was the origional plan, into the larger airports I am sure most of their routes would work. Add that to the current set of routes that are working and there we are - profit!
Well, thats the idea anyway...