On point 7. I'm with Tilt. There was a heck of a lot or reasearch done to get the ISS up and running. A lot of money was probably spent on finding out what doestn't work. In the future that money doen't need to be spent again. They know how to build a cost effective space craft. So there will probably also be room for mega yatchs so the Bransons and Trumps of the future can flaunt them.