Its great news it was blocked. DAA are already behaving like a monopoly with their introduction of dynamic pricing. It never got cheaper than before dynamic pricing, just went up.
If they want to make more parking available, why not build modular steel ports above ground level on the land they own (a lot I may add). You see these in other airports but not Dublin. Its just a massive sprawl. Just one over ground level would almost double capacity. They could run the shuttles more efficiently (fuller) without having to establish a 4th one to another site.
My belief is it was it was being purchased so that they would have no competition for a service (parking) they make a lot of money from and plan to make even more from.
DAA already own a lot of land around the airport but can it be said they are making best use of it?