Phileas Fogg
I do not think over flight revenues will be that large in comparison with the revenues from Gas and Oil. That would be the gas that powers a lot of Eastern and Western Europe and currently the countries within those areas have little option as the infrastructure is not there for an easy change of supply route, or supplier, and winter that old Russian friend is coming. The gas fires maybe going out all over Europe to paraphrase an old but recently much used quote.