The trend has been resistant to any particular link to localized economic ups or downs. Characterizing the 2023-2025 era (at least in the US) as "a time of scarcity" is divorced from any sort of factual reality; there is no quantitative data to support this idea and it seems to mostly be based on social media vibes (hence the oft-commented "vibecession").
One could make a much stronger argument exactly to the opposite: wealthier societies tend to become more individualistic and separated, people choose to live on their own if possible, and in bigger places; large companies have such attractive economics and pay people so much more than small companies do that it is difficult for small organizations to compete for talent.