"Community Air Carrier" is defined in EU regulations as being substantially owned and effectively controlled by EU nationals. Interpretation is left to each MS when issuing an AOC.
if the remaining MS's enforce these provisions there will not be an EU-Easy that is owned and controlled by UK-Easy. In some jurisdictions these O&C rules are more than 51% ownership (US is 75%) and require nationals in all senior management positions.
Swiss-Easy is 51% owned by Swiss nationals but 100% controlled by UK-Easy. The Swiss don't care, nor do the other 27, at the moment. I foresee difficult times for them as well.
I'd expect a strict interpretation here, as will the UK in registering any UK-Ryanair.
Edited to add: And I don't see an easy ride for IAG. IAG's airlines can be either EU or British, not both. And here it will be third countries determining if IB is EU, or BA is British. BA without traffic rights is just a domestic airline.
Last edited by ExXB; 24th Jun 2016 at 11:56.