Michael Jackson was a brave man, and fought to give you everything he could. It is sad to know that in a time in his life where he was happy, he would pass, but it was not in vein. The physical man is gone, but his music, work, family, friends, and spirit are not.
We're not gonna get 50 concerts. However, there are many things from Michael we have not seen. He has at least 1000 unheard songs, unseen by many concert footage, NEW music he has created since 2001, and footage of rehersals. I would not be surprised if Kenny worked out a way to get the footage out to people so see.
Michael Jackson fought injustice, saved many lives (directly and indirectly), and broke down doors for all kinds of people. He did not finish was he set out to do, so it is our job, and the job of those who have continued his legacy (Usher, Beyonce, and such) to continue what he started and make sure he is looked upon in a positive light.
He was born for you, he lived for you, and in the afterlife he is still living for you. A century after he's dead, people will still dance to Billie Jean and wonder how he made the moonwalk happen so perfectly.