Emirates, Etihad Airways, Qatar Airways in Europe analysed
EDI is the only destination in Europe served by both EY and QR but not EK.
We've seen time and time again airlines are like sheep when it comes to protecting their market share, which in EK's case at GLA is currently starting to show the effects of competition at EDI.
So given EK's competitive nature it should come as no surprise if they do choose to launch EDI in the short-medium term. It'll be as much a strategic decision as anything IMO.
Will it lead to a bloodbath? Quite possibly, but I can't see that being a major concern to an airline that is flying 6 A380s a day to LHR alone against significant competition! Time will tell...