For the Thai experiment it was exclusively those who didn't have family. Some with family considered it, but as most of their kids are still very young they didn't do it in the end.
Regarding the remote work, even when we're at home, that means we're in different cities and even different countries, so our whole company is set up as a remote company, although many chose to work from the main office in Barcelona. To answer your question, no one felt left out, because we simply continued to work as usual (chat, video calls, etc.), it just happened that some of us were at the different location.