1) Pilgrims. I would imagine moving to a foreign land full of potentially hostile natives is a bit riskier than living at sea. So that cost needs to be factored in. For certain purposes we already know that people are willing to pay a premium for living in a more friendly jurisdiction. For example, there's a huge premium for living in Bermuda. As for deciding who goes and who leaves? That's for the owners of the seastead. I can't imagine it will be as bad as what governments do now.

2) Maintenance. There are lots of options. My guess is that maintenance will be baked into rents or usage fees, just like in every other line of business. As for enforcing contracts, that's where the owner of the seastead will be careful about who they allow in.

3) Wealth generation. There's a few ideas here. First is simply regulatory arbitrage. Just like tax/regulatory havens like Bermuda, Caymen's etc. This could take the form of housing immigrant workers (like Blueseed) or financial firms (like the CBCs) or medical tourism (which might not work because the AMA will crack down on it).

4) Expulsion. That's a good point and would have to be addressed in the contracts signed by the customers of the seastead. I don't think "Expulsion" is the problem here, I think it's more an issue of contract enforcement. My guess is the seastead would have to be very careful about who they grant access to. This isn't a problem of early adopters. This is a problem of scale. But it is a very legitimate concern.

5) Government. I deal with corporate politics everyday. I would prefer to deal with corporate politics over any interaction with the federal government or the state of California any day. Just going to the DMV is a nightmare. As for greedy executives making companies a nightmare to work for. My recommendation is simple. Get a job at one that is not. That's my plan. Unfortunately, I can't do that quite as easily with the state or federal government.

6) War. If you're talking about wars between firms, a much bigger problem is rival firms hacking one another's computer systems. I'm sure that happens now and how do we address that problem? Through security measures. Likewise on seasteads. There's just no way to live in a perfect world, we don't now and seasteads won't solve that problem. If you're referring to actual armed conflicts, that's not a big problem with island westernized technologically advanced island nations now, why would it be under seasteading. My guess is that the early adopters will be silicon valley tech types and other high skilled workers, not crystal meth gangs.

7) "You can just leave" Yes, leaving is sometimes hard. That's called "life" and it's no different than the way things are now. I left my friends, family, and work colleagues to move to the SF Bay Area. It was the best decision of my life. Yes, I left a lot behind, but I gained a lot more. In case you haven't noticed, there's a whole country built on this concept...I'll let you guess which one it is (hint: it's flag is red, white, and blue).

Honestly, I appreciate your critique. I am disappointed in the book. It is not doing it's job of clearly communicating the pros and cons of seasteading. If it did, I think you would have more thorough answers to the concerns you raise.