West Coast baby
I think others provided the type of context I was looking for but when I think dense living I think of the dense high rise projects that were built to provide low cost, section8 housing that theoretically were supposed to provide benefits to poor folks that I assume would also include the benefits discussed in your meme. However they were notoriously dangerous and had a myriad of problems that made them far worse and extremely dangerous for residents.
I’m a big fan of trying more than one thing at once, so even though I think it’s possible to learn lessons from effective public housing projects in Europe, I also think that we can achieve a lot through the private market. In CA, there are a lot of zoning barriers to building this kind of stuff. Even without government assistance, we can get some of this just by removing prohibitions on building this in a lot of areas.