I'm sure they are not actively encouraging easyJet on to AMS because of the harm it may do to the relatively new and recently expanded KLM service to AMS. Airports always try and control what airlines do through their airports with incentives or lack thereof. I can guarantee you that nobody wants a repeat of the Flybe debacle. Different airlines on different routes has been the way they have shaped the airport post COVID and its served them very well thus far.