I dont know if he would have still lived or not, but what i do believe is that he would have done more album and more songs had he not been accused.
I think that the allegations, especially the first one, broke his spirit. Also, after the 93 allegations, it became ok to write anything about Michael. Sure, they wrote shit before, but they became more mean spirit and more "creative" in their story's. That was hes lowest point in his life, people believing in that garbage and media having a field day bashing him.
Yet he managed to produce "HIStory", wich i think is his best album ever, the first album of his i fell in love with, the album that made me a fan.