Survivalist market
There are survivalists who would like a home that could have a good chance of surviving various potential disasters like breakdown of society, nuclear war, disease outbreaks, etc.
Contents
Food
A seasteader could get their own food by fishing, hydroponics, and maybe aquaculture. Watermakers are easy enough. A supply of hydroponics nutrients to last many years is not very large (most of the mass of food comes from water and the carbon in the air). Food storage food is also very reasonably priced and small enough to fit on a seastead.
Disease
A seastead could stay isolated from other human or animal contact to make it impossible for many types of contagious diseases to get to it.
Power
Solar panels can provide power for 25+ years.
Defense
A survivalist on a seastead out in the deep ocean sort of has a big moat around him making attack from hungry people trying to get the survivalists food less of a problem.
Market size
It is not clear how many survivalists would be interested in buying a seastead. This would depend on how much seasteads costs. But even a small market segment could help with initial sales of seasteads.
