If, for example, previously BA had had a 30% share in BMI and both were flying UK-IRL I cannot see how the Irish Govt or its people could have cared less about a large and a small UK airline.
So, try as I might, I can't see how the UK Govt. could really care less about a large and a small Irish airline. The EU doesn't appear to have a problem with it either.
So, draw your own conclusions.