Lyric discussion by brumus 

Cover art for Hijack lyrics by Paul Kantner

The song was a science fiction story (nominated for a Hugo Award) so it wasn't meant to be taken literally. Yes, it was naive idealsim but utopias usually are unrealistic, but again, it was a work of fiction for one's entertainment and a great piece of work nonetheless.

I believe Orson Scott Card said this was the greatest science fiction album ever.