Article from today's sunday edition on the topic:
On one level Sci-Fi replaced Cowboys and Indians for children. Bullets became lasers and swords returned from medieval play via the light saber.
Star Wars's simple title will stick around for the time when the stars/space are still our next destination. Once that becomes more common place then the ideas of the myths embedded in SW will move onto other stories.
In the less short term, Star Wars will become the poster child for extended/perpetual copyright abuses.