Some strands of this thought include:
-Various attempts to make "digital countries", to various degrees of seriousness
-Balaji Srinivasan's 2022 book on "network states", which I reviewed
-The "coordi-nations" and later "networked nations" movement
-"Phyles"
-Seasteading (and also on the purist end, Liberland and Sealand)
-The Charter Cities Institute (see also: my own thinking about crypto cities)
-Attempts by existing nations to "renovate" themselves, such as Estonian e-residency, and more recently on a bigger scale, Bhutan's Gelephu Mindfulness City
-Similarly-themed projects from earlier generations, eg. Freetown Christiania and Walt Disney's city EPCOT