Once upon a time, a few airlines got together and thought "Let's find somewhere nice and cheap to set up a maintenance base". The base was built and the country joined the EU. Once all the EU subsidies kicked in, the economy and hence salaries increased and now X years down the road Lufthansa has had to move to eastern EU. So no prizes for guessing what will happen in the future there?
Aviation has always been an industry on the move and what goes around comes around. The problem is, once you loose an industry it will be very difficult to rebuild it when it is required. The engineers that are leaving the industry are not being replaced. The wages on offer at the moment certainly do not encourage people to get into this circus. I would like to think that one day the operators will think twice before flying a/c all over the globe to find a cheap garage to get their jets serviced and set up closer to home again. Try calculating the cost of a late aircraft stuck in a hangar far from home. It does'nt take many to negate any finantial advantage in taking the a/c there in the first place.
Right, thats my moan over. I feel better now.