No FR announcement is ever going to arise from the success of rugby flights. In essence these flights as they added in the Six Nations also, are basically charters, in the words of a certain someone from FR themselves.
Any airline that's hoping to cash in on these could have done the same, but FR was best placed to do so, and as a result i can predict that they along with some of the other carriers at CWL have made a very healthy financial return on these rugby flights.