Do you have any sort of data to back up the claim that people are taking internships and going hungry because they don't have senior-level experience? I would think that it being a "systemic evil" would certainly warrant at least a few newsworthy articles or stories. Besides, nobody is arguing that something like that would be a morally acceptable situation or that people engage in that type of activity.

As for GSoC, again...voluntary. The kids have fun and they earn monetary rewards for their work.