I am 100% in favor of these actions, not so much the squatting itself as the fact that the city ends up turning useless offices into homes - there is too much office space in paris, and an awful lot of them remain empty.
Also, social housing tends to drive the middle class out of the market : since it takes up 15% of the housing space in Paris and houses people who could not be on the market otherwise, it actually contributes to forcing the middle class out of Paris. (Not saying social housing in itself is a bad thing)
SO if you combine :
- too much office space
- 15% of housing taken up by social housing
- limitations on construction because the city is a giant museum
- no extention of the city since 1860 (prices go down 20-50% when you change the postal code from 75 to 93
- ecological regulations that make buildings more costly to building every other year
You get why prices have more than doubled since 2000. Paris is going to be a city without a middle class, with only elites, upper-class and poor workers