I don't think PG is responsible for this any more than the rise of the tech sector (and he defended himself quite sufficiently in his reply). When a new industrial sector emerges, people will get rich, and, well... welcome to the information age.
I think that hackers, however, have an appreciation for the system. Hackers want to learn about complex systems work, but they have a profound respect for those complex systems. Thus, they're not engaged in the business of getting rich no matter what the cost to others.
All the people I know who only want to get rich end up in jobs that promise that. But they are all jobs that reek of unsustainability, like wall street traders and dot-com-type startups with a lot of hype and no business model or valuable contribution to society. These people are selfish and as we're seeing (and have seen during a thousand years of business cycles) their money is gone as quickly as it came.