The day after FR announced MAN-MAD, There was a Director business brief at the MAN base who said they were "pissed off" (his words) as MAD was already in the pipeline and MAN knew it. Yet they let an airline who they (MAN) had serious issues with potentially jeopardise what has been steady, consistent and reliable growth shown by Easyjet.
So you're suggesting that any airline wishing to start MAN ops needs to ask for Easyjet's permission first just incase they plan on operating the route in the future !!