The real skill is managing the resources you have to make profit. Reducing costs is one thing and reducing salaries quite another. Slavery would also be very useful to reduce costs. IAG lawyers are exploring the possibilities and are already lobbying in Madrid (only).
IB have made losses for five years, the worst of them before IAG even existed. The economic situation in Spain is worsening. How many 'unskilled' managers do you think IAG should go through, all failing to make a profit with the resources they have, before you realise that you can't make a profit with the resources you have and have to change the resources? You've probably got two years left at the current cash burn rate before you go bust.