To the people who hold that view (not you, clearly) I would say, I have never met anyone who doesn't do anything; the hopelessly unemployable people I've met have usually been a really poor match to the workplace. They don't like the 9-5, they don't like being told what to do, they don't like hierarchy. They tend to invest heavily in their hobbies and non-work interests. This is probably something which hackers and entrepreneurs can relate to, btw. Of course, it makes no sense to people who feel comfortable and warm inside a hierarchy, like to know their place, and like being told what to do (and, hopefully, acquiring a coterie which they in turn can tell what to do).
Personally I share your vision of a more interesting and stimulating future free from the shackles of mandatory work and based around willing collaboration. I'm not sure it will happen though, if a small group of people with wealth can opt out of society altogether, except for using it as a source of greater wealth, on which they refuse to pay any tax.
I'm not opposed to capitalism, btw, I just feel it should serve everyone, not just the few.