Also, they could look at the atmosphere at Irish courses/facilities etc.
Longchamp for the Arc meeting is as good as flat racing gets - I'm not saying this is easily replicated, but if a racing weekend in France can draw 10000 British racegoers, there must be the potential for Irish racing to do something similar, albeit on a smaller scale.
Punchestown gets a lot of British racegoers at a time when they can choose between Cheltenham and Aintree at home. so doesn't do badly and Naas is not capable of taking 10,000 visitors staying so would have to stay in Dublin. What helps Longchamp is that its in the middle (almost) of Paris. so if you could move Punchestown to Leopardstown I think it would do really well with visitors.
If you have top class racing for €4 in then people will come. To get €4 racing, Ireland needs a tote monopoly like France. That's the price you pay, although having six group 1s on one day is the main draw!!