That’s a good point. But the US is not offering this same path to citizenship to anyone willing to buy a house in rural Alabama. I assumed these visa programs were aimed at attracting wealthy foreigners which is why the US has something similar for anyone willing to invest $800K in a commercial enterprise. That’s why I was curious if $263K is considered relatively wealthy in Greece and could buy a house even in desirable areas. The fact that apparently this is not the case makes the goals of this program unclear.
If this is true it might help explain the recent divergence between GDP and GDI.