Why does he do it?
All these changes and all this tinkering do one undeniable thing----they keep Star wars in the news and relevent-----for good or for worse---probably for the worse artistically---but possibly for the best commercially.
A case in point--- you can see Star wars outdoing(at least at the moment) Pirates Of The Carrabean 4 and Thor on the Blu Ray top sellers chart(on blu ray.com)----not bad for a 30 year old saga----especially as the saga is coming up against contemporary blockbusters like Pirates 4 and Thor---- will be interesting to see if Star Wars can compete with Transformers 3 when that is released in a couple of weeks.
Although a film like Citizen Kane---which was also released on Blu ray this week---- retains it's artistic integrity----but does not appear anywhere on the top sellers list!
I think there is a moral in there somewhere!
on edit: Just realized that Pirates 4 won't be released in the US for another month---it came out here in the UK this week.