Have you noticed that all those countries are small, population-wise? Perhaps all bank accounts divided by the population would give a clue of a top heavy situation for future investors? Just thinking. But there must be a rough guide for laymen to work ut whether a country is a safe situation, or not.
Spain, definitely, depended mainly on construction and tourism. Construction went on for some time, until it became apparent that people had stopped buying. Consequently, we have about 200,000 dwellings empty. The UK, on the other hand, always seem to be 200,000 short.
In my area there is a 30 year old building, that used to be a 4 star hotel, that has been stripped to bricks and mortar and is derelict. Heaven knows how much money was spent on that. Now it costing money in security, to stop the homeless moving in, and the owners must be waiting for a buyer to redevelop it.