Jack, you dont understand what you are talking about.
Ryan, you are correct - 30 seconds on google is an amazing thing.
As with all other airports, Cork Airport cannot offer preferential rates on existing routes. However, Cork Airport does offer a generous incentive scheme to airlines planning to launch new routes to any EU destination. The current scheme involves a five-year sliding scale of discounted charges. No airport charge at all is levied in the first year of operation.
Air Transport News
EasyJet did not get an incentive from Cork Airport for Gatwick.
As for O'Ceilidh - Aer Arann lost their case in the competition authority in Cork, so yes, sad to say (as I like the man) - he was talking out his ass.
Ryanair welcomes the decision of the Competition Authority, which exposes Padraig O’Ceidigh false claims that Ryanair was trying to put Aer Arann out of business. Even Aer Arann’s Chief Executive, Paul Schultz, recently admitted that these claims were false, when he confirmed in a speech in Cork that Ryanair and Aer Arann don’t really compete with each other because both the airlines only operate on one of Aer Arann’s 40 or so routes.
Irish Competition Authority Drops Aer Arann Complaint ON CORK DUBLIN ROUTE - Low Cost Airline News
Inquiry into Cork-Dublin route ends | Irish Examiner
Aer Arann's complaint not upheld - Irish, Business - Independent.ie