Actually, I think that the corporate world has begun to accept, however grudgingly, free agency. One reason is that many of their best people have left to become free agents. They know that there is often, if not always, more talent outside their corporate walls than inside it. So the corporate world is catching up, not because they are enlightened, but because they're scared. Free Agent Nation.
Any new development is always a threat to the existing order.
Already, we see free agency become an accepted way to work, and that will continue. That doesn't mean that once somebody becomes a free agent, he or she will remain a free agent until their dying days. Many people will have careers in which they migrate from corporate America to Free Agent Nation and back again. Probably when I first used a Macintosh computer in 1984. I was 20 years old, and I'd never seen anything that cool in my life.