Surely ez would need to offer a competitive package to at least Corendon. EZ is a big player in the market place and needs to stand up to that status. Schiphol has only a few players and ez should not been seen as the poor relation. They are orange after all. It's taken them long enough to get there: don't be penny wise & pound foolish.
Are they still the 2nd largest user, by flights, after KLM? If so then even more the reason to stand tall.