With respect mack you're missing the real problem here, big acts such as Elton John and Iron Maiden can 'money' their way through the problems, it's smaller acts that are getting absolutely shafted by this, the kind of small-mid size band/artist that travels across many countries, performing many gigs, and they take everything they need with them, and often do a lot of their own 'crew' style work as well, it simply isn't possible for them to hire the people they need on the continent, especially from one country to the next, for example a crew hired in France won't want to travel to Spain for a few gigs, being paid peanuts.
UK artists have been thrown under the bus, along with UK fishermen, UK farmers, Northern Ireland, thousands of SMEs up and down the UK, and so on - in fact, it's getting pretty crowded under that bus.