Rest assured, Roy, that your fears will not materialise. The ME3 will remain what they are and where they are, with their success in doubt, except maybe EK.
Taking over routes, as many fear on here, would need crew basings in Europe. Now the owners in the ME fear that more than the holy water.
Administrations that can't be told what to do and ...... (gulp!) UNIONS to deal with is their worst nightmare, even worse than mergers with other Arabs.
Not that they will disappear as formidable competition, no, but they will want to keep their business model as it is.