The fall of the Habsburgs had far more important losses than money. Some members of the family did step back, but members of the main-line didn’t and they left the country. Plus the loss of assets didn’t just have to do with the new republic but also Nazis. The fall of the Habsburgs had far wider consequences than with the former Greek monarchy. Additionally, it was foreign powers who further encouraged the downfall of the Habsburgs.
The economic instability of Greece has nothing to do with the former family, but by Greek politicians. There are fewer monarchies today for all types of reasons
Well, the difference is really between reigning and not reignig monarchies in Europe. Those who are still in the focus, although they don't have much to say and decide when it comes to political decisions, are the Netherlands, Belgium, Luxembourg, Liechtenstein, Monaco, Sweden, Norway, Denmark, Spain. Correct me if I left some country out.
All those other royals or descendants of nobility are interesting for us in this forum, but quite irrelevant for the rest of the world IMO.
I can understand that the Habsburgs, Sayn-Witgensteins, GF of Prussia , just to name a few, and any other ancient and obsolete nobles are clinging to their status and don't want to be forgotten. If you and I belonged to such a family we probably would adhere to it too.
The big difference is how those descendants present themselves in public. I am sure they have their networks , just as the famous and rich have. They usually watch out that no outsider comes into their circles (there are exceptions).
But in reality monarchies in our society are just a relic of the past. And if they don't "behave properly" they will loose the estimation of their people.
That is probably the reason why they all are trying to be on top, shaking off old habits and being modern (the British are a very good example IMO).
if they want to survive they have to work, engage themselves in social issues, be there when there are problems in their country, show why they are still important.
The devotion and acceptance of Kings and Kaisers in the past are long gone, which is a normal and lucky development in history.