Economics, and capitalism in particular are not a zero-sum game http://www.povertycure.org/issues/the-zero-sum-fallacy/
However, povertycure.org seems to be embraced by quite a few neo-libertarians, neo-cons and the specific page you linked to is high on platitudes and fairly low on facts, in my opinion.
Between the strange mix of a libertarian worship of a unicorn "free market" combined with religious overtones, they strike me as a somewhat confused group with quite a few ulterior motives running in the background.
For example, this charmer from povertycure.org's board:
http://www.theguardian.com/business/2009/oct/21/executive-pa...
That's not to say I think povertycure.org is all bad and I disagree with everything they all say and do, but I take them collectively with a grain of salt. For example, I think Michael Fairbanks has some very smart ideas here and there, but I'm still wary of anyone that embraces a "free market" blanket solution to so many issues as well.
As far as the crisis in Europe goes, I think the damage that austerity measures have caused aren't given enough credence by a lot of the corporate media for obvious reasons.
http://www.social-europe.eu/2014/09/europes-austerity-disast...
It's ignored too much, in my opinion.
edit: spelling
Look at it this way. Money causes corporations to become powerful entities (through propaganda, lobbying, internal R&D, etc.), and this reinforces the loop. There is a selective component, in that competition leads to corporate casualties. In other words, capitalism causes agglutination of money. Hence, capitalism leads to some people becoming rich, and most people becoming poor (because they are now out of business).
The effect will be directly noticeable to people here on HN when Google invents strong AI, and puts every programmer in the nation out of business :)