that is true hm
in the beginning we would probably have to use some communist-like society until we stabilise
well, that's a problem but people who agree to join will join on their own, no one will push them

not being able to leave would be a great motivation for survival too

lots of people would do it for the fame

Yeah, I think that's the best to start with. When the population and the colony have grown and they can start doing non-survival things it can go capitalistic or something.
People that does it for fame are usually not capable of seeing long term consequences of their actions, and they are not often willing to work hard for their survival either
So those are probably not the best candidates for this colonization project
Lol, and Antarctica is also claimed anyway (by multiple micronations!):
http://mw.micronation.org/wiki/Federated_States_of_Antarcticahttp://mw.micronation.org/wiki/State_of_the_People_of_West_Antarcticahttp://en.wikipedia.org/wiki/Grand_Duchy_of_Westarctica