Somebody said, "Why didn't they release all 12 Cascio tracks on one album"? Well, that almost happened. According to Roger Friedman -- whose word is a hundred times more important than ours in these matters, because the man personally knows the Cascio family, and has access to the eyewitnesses of the whole sessions --, several record companies tried to buy the Cascio songs, and eventually Sony got the rights. If another company had outbid them, we might have had a concurrent MJ release called "The Cascio Sessions" released at the same time as "Michael".
One last thing : I'm reading a lot of people here saying how part of them died when MJ died, and how he was a part of them, and everything. You know, it's one thing to be a fan, or even a HUGE fan, like I am, but it's another to have an almost personal, emotional relationship with a megastar you've never met. Personally, I'm a rabid fan of MJ's music, and I need to hear and know everything about his career, but I stay rationnal about it. And maybe this rationality is part of what differenciates the "believers" from the "doubters" in this matter. Some doubters feel like they are on a crusade to defend poor MJ who, in death, has been almost violated by the evil, treacherous Cascio family. None of that is based on what we know.