I think it's being generous giving Cork every person in Cork County. After all, if you are in Fermoy or Mitchelstown, you can get a direct bus to Dublin Airport and not to Cork Airport.
If the politicians in Cork, who are stressing about growth in Dublin, worried more about access to Cork Airport from Waterford, Kerry, South Tipperary and even Cork, than they did about Cork people using Dublin Airport it would serve them a lot better.