Seasteading is already underway. We have the technology to build floating platforms large enough and stable enough to host cities that can grow sustainable food, generate electricity, and provide a myriad of services.
See our video Seasteading! What did the first seastead achieve?
The challenge for seasteaders is to secure funding from savvy investors. In other words, the cost of living on the ocean must be low enough, and the business opportunities promising enough, such that there is an economic incentive for people to live on seasteads.
Companies like Ventive Floathouse and OnHand Agrarian are focused on cost-reducing solutions within the territorial waters of host nations, while still remaining dedicated to the goal of obtaining political autonomy for governance experiments.