I would tend to agree. I knew a grad student back in college who took an unpaid internship with the USGS for almost a year, 10-15 hours a week. Demand for these "opportunities" was quite high - in fact, she was lucky to have landed the position, as the story goes.
She ended-up doing quite a bit of work for a major research project, all for free. I don't even believe she was mentioned in the final paper! There were always "rumors" of positions opening-up, a carrot they dangled over their interns. But, unless someone croaked, or you obtained your PhD, the chances were extremely slim you'd land a real job; they knew exactly what they were doing! Talk about exploitation... This was also around 2008, at the height of the bubble, so that may have played into things as well.
Mohamed, you could start your own business, develop a product for your business, and then market said product. So, you'd obtain experience working for yourself with the potential to make a sale.