You're right, we don't own them or the Star Wars universe. He can do whatever he wants with his own work. But where would he be without the original fans of the orignal trilogy. We supported him, his movies, merchandise etc. through out the years, pre-prequels and Special Edtions. He knows how beloved the OT is, people grew up with these films and there is a lot of deep rooted nostalgia with them. I do think it's also a respect issue, out of respect for your fans and their full support for you over the years give them this small peice of the pie. If he doesn't have the ethics or enough respect for his fans to release the foundation of his great empire ... so be it, I don't have to respect him or his personal decisions.
Most importanly, I want these movies perserved on the newest format of technology. George Lucas said they're on VHS if anyone wants them. Gee, thanks George, I so want to watch the grandiose Star Wars on my old VCR and grainy, full screen VHS tape. Besides which, these tapes will only last so long, mine are already worn out.