I've never owned a $100k Mercedes, but my current car has features that weren't even dreamed of in Mercedes from the 1990's.
I suggest listening to the Johnny Cash tune "One Piece At A Time" just for grins. Here's a link to a Youtube video of this song: http://www.youtube.com/watch?v=rWHniL8MyMM
Anyhow, even if you never actually go into space, you might be taking advantage of one of the spin-offs of space-related technology right this minute. That GPS on your golf widget that maps golf courses? Space program in the form of satellites. There's a rescue tool used by emergency responders that is a variation of explosive cutting devices that were used to separate devices from the Space Shuttle.
I don't really see space as becoming the playground for the very rich unless you count building very expensive "cruiseliner"-style spacecraft for rich space tourists. For as long as people go into space, there will be need for professionals who can steer the spacecraft to a distant world, repair the engines, and generally keep the rich people alive and help them reach their destinations as expediently as possible.