Well, this so called "third way", as I know appear in US as private elder care infrastructure, or as charity. When somebody become so weak (ill or old), cannot

Well, this so called "third way", as I know appear in US as private elder care infrastructure, or as charity. When somebody become so weak (ill or old), cannot care for himself and unfortunately have no family, they could ask to local private care to live in their specialized hostel. And it is not always just ordinary hostel with one room for 5 persons, but some are more like classic motels, with rooms for two persons. Also, similar infrastructure existed for a long time in Italy, under Catholics church, and I know few good young people, who grown there. As I know in Northern Europe (Sweden), there are many community buildings (under municipalities), very cheap to rent and even possible to get social donations and not pay at all. Existed also non-church homes with similar economy (and also not designed as charity), but their examples are not always good. For example, Pruitt–Igoe in St. Louis, Missouri, United States, becomes huge crime center. Other not good example, some bad districts in exUSSR (for example Biryulyovo in Moscow, or Orekhovo-Zuyevo in Moscow Oblast, Russia), also known for their criminal level. From Pruitt–Igoe experience, people created few rules about so called social homes, and one rule, they must be non-comfortable, to motivate people to grow to commercial rentals or even to once buy own home; second, should be some power, who will constantly monitor residents for crime and immediately deport offenders. So they are not "Third way", they are just temporary solution of very old problem, and not easy solution, even not cheap. https://en.wikipedia.org/wiki/Pruitt%E2%80%93Igoe https://en.wikipedia.org/wiki/Pruitt%E2%80%93Igoe