> Take this area, plenty of plots now housing cows. Distance to city centre (by car!) is 20 minutes.
That area is precisely the site of the SEM Nordost [0], one of the two major remaining new construction areas. And as you can see on that newspaper map, it's the border of the city - the area to the east is already Aschheim territory. Munich cannot build outside of its borders, no matter how much farmland there is.
> Just like in the Netherlands, about 50% of land in Germany is farmland.
Uh, yeah, we have to grow the food we eat somewhere, Germany has over 80 million people to feed. We already import way too much food from elsewhere, especially the Amazon rainforest where beef for export to Europe is made on burned down rainforest area.
The territory of the city of Munich is already full, and you completely ignored my last point above, that a city also needs green areas for fresh wind to come into the city, recreational areas for the people, and that high-rises and other highly dense developments bring their own problems with them.
[0] https://www.hallo-muenchen.de/muenchen/suedost/muenchen-boge...