MGM needs to sell all of it’s properties because they clearly can’t manage them, and after The Hobbit and Bond 23 are out they need to sell the MGM name to the highest bidder. MGM is, well now it’s more like was, a Hollywood institution. However, it has become increasingly clear they are never going to get their act together and/or get rid of the criminals running it. The absolute only reason they are even being granted these ‘stays’ and extensions is the additional backing from outside studios and the creditors knowing the next two properties will make them bundles of money. Both properties can be made at a more financially stable studio, with less time to see a return, and better budgets. The remaining Middle Earth stories that can be made into films and Bond movies do not need MGM to get made and they won’t.

I fully expect Stargate to come back in some form on film, whether that’s more SGU, a sequel to the original, or a total reboot. I don’t expect MGM to own the property or be involved in any way when that happens and it will probably be Sony, Lionsgate, or some other studio with a vested interest in the Stargate IP now that will end up with full or co-ownership rights to the franchise.