>>1345552>One of these is the equivalent of what, 3 or 4 regular six floor apartment buildings.Try two dozens. The lower floors of the Haussman apartments are large apartments (100+ m2), which means that their price will usually be well over a million euros (the average surface price in Paris is 10k €/m2). Although 1 in 30 Parisians are millionaires, 29 aren't, so they won't own nor live in these. On the other hand, Parisian HLM-tier buildings will have dozens and dozens of 65-80 m2 apartments, much more affordable for people.
I couldn't find data on that, but you can absolutely bet that the crushing, vast majority of Parisians do NOT live in Haussmanian buildings.
Taking a visual example of Paris XIIIe, you can see that residential towers aren't a particularly rare sight in Paris. Pic related is the result of Italie 13, a plan undertaken in the 1960's and 1970's. If you look at a density map by district, the central districts, which are indeed predominantly haussmanian, are far less populated than the outward districts (where high rise residential buildings exist)