We have had several posts about the proposed bid. This post just over a year ago by John Considine looked at the context of bidding for major tournaments. It refers to the release of a report supporting the bid that was expected at the time. A subsequent post however revealed that the IRFU and the Minister were unwilling to publish that report. This report has still not been published but perhaps today's launch will provide the evidence supporting such a bid and the assumptions around visitor numbers and commercial opportunities that have been made.
Robbie Butler refers to literature on the effects (economics and wellbeing) of hosting major sporting events in this post and comments. There several posts on the hosting of major sports events including the problem of optimism bias here and the difficulties involved in measuring their impact here. These posts here and here also look at the winners curse problem in winning bids for major events - they consider the Olympics so perhaps the threat is less severe for a smaller event like the Rugby World Cup.
Paul O'Sullivan has an interesting take on the role and benefits to the GAA of supporting the World Cup bid here.