Effectively sovereign is pretty much already the deal in some countries if you're rich enough.. The only problem with Sahara is that no one will bother - there

Effectively sovereign is pretty much already the deal in some countries if you're rich enough.. The only problem with Sahara is that no one will bother - there's also not much to govern except sand. If people wanted to spend billions to seed the place I don't think any of the government in Africa is going to say no, it's just that nobody is doing it.