I am curious about this line of thought and would like to understand it better. I am going to be a bit of a devil's advocate for a moment, and I make no claims to having an expert Disney trivia memory or geographic memory either. So I very well may have my facts wrong.
First, I have visited all the countries in World Showcase. Except for Norway and Morocco.
As far as the countries in WS, some of the pavilions seem solidly based on those countries. Other pavilions seem based on historical elements and not active parts of today.
Two examples. Italy and St. Mark's Square and Tower. The colors of the marble and look of this pavilion are squarely based on the real place today in Venice. So it fits your desire for "real places".
Next look at China. To see the type of architecture and garden in the China pavilion, one has to go in search of tourist areas that represent the China of centuries past. The Forbidden City and places like that. To me it does not fit your desire for "real places". It is real in the touristy real sense.
When I walk around Epcot, I see Snow White M&Gs at Germany. And a Snow White topiary during Flower & Garden. Did anything in that movie say it was Germany? I do not remember it. They certainly did not speak with German accents. To me it was a placeless fairy tale, even more so than Arendelle which intentionally is based on Norway.
Aladdin. Agrabah is not a real place. But there are Aladdin and Jasmine out in front of Morocco.
Mary Poppins and Peter Pan? Very clearly England as they say in each movie. Winnie the Pooh? I have no memory of that except that Christopher Robin speaks with a British accent. But I see Winnie the Pooh, Eeyore and others' topiaries there in the UK. I have not seen Winnie the Pooh M&Gs there but then I do not pay much attention to M&Gs.
I cannot remember but does Pinnocchio literally say it takes place in Italy? Or is it just the names of the characters that make us think that? I cannot remember for sure but are there Pinnocchio topiaries in front of Italy during F&G?
To me Disney clearly takes some of the fairy tale stories and makes associations with various countries and promotes that within World Showcase.
Again, I am not looking for a big argument. In fact, I struggle a bit with Epcot and how it all fits within Disney more so than any of the other parks. So I would appreciate any insight on Epcot from folks like you here.