It just shows how much BS all the GFW nonsense is. MS is simply throwing everything they have at 360, if something doesn't suit 360 they just throw it into the trash can. From any logical perspective there's no reason to close Ensemble, they're one of the biggest and most successful PC devs of all time and AoE4 would once again be multimillion seller... but on PC, it wouldn't stand a chance on 360.
THis is the same thing that happened with Access last gen, Links was huge on PC, but it didn't work on 360, so instead of going back to PC MS just threw it away,
I just hope the new studio will stay away as far asa they can from MS, aside from doing HW support. Bassicaly every publisher will be glad to sign them to work on what they do the best: PC historical RTSes