Too bad for people "all over the world that want to live in it" when said country has sovereignty and can vote to prevent locals to be displaced by them. People of each country decide what is fair or not, not people outside of it.

Is it fair that someone, by sheer accident, was born in SF, is SWE and now wants to take advantage of that stupidly high income and dislodge people who have lived their whole lives in a certain place? Probably worked much harder and for longer? Where all their family and friends live and always lived for more than a century? Their culture and life? You seem to forget Portugal is not the US. They have more than 3 times your history and with it each place has a markedly different personality and much deeper roots not only culturally but also relationally.

Maybe you're used to a capitalistic emotionless everything-is-replaceable view and that in life all is fair and square, the ends justify the means, but perhaps you should rethink it.