I'm just countering the claim that people won't sit on ass forever; not everyone is as motivated as angersock.

Most assuredly some will, that's to be expected. If given a similar option I'd mothball my career over the course of six months and spend $n years engaging in unprofitable creative pursuits and maybe travel.

But they wouldn't actually be participating, they'd just be a middle man that takes a small cut to support their own life without providing anything useful in return (aka a parasite)... The good part is that it looks like most people wouldn't just do nothing all day long, they would contribute in one way or another...

They would be providing consumer spending. You claim this isn't useful to the economy?

With money that were pretty much gifted to them by other people - those people could cut the middle man and just spend it themselves...