Who will tell what games will be on the developer platform? Will he have only his own games or will there be other producers?
It was mentioned only that the first games that will be on this platform they will be on mobile devices, and whether they have partners or sponsors of this no one knows.
Is mobile gaming market big enough for this to work?
It is huge, especially for such games. People spend thousands for in-app purchases. If bitguild makes a good, competitive game, we could see it rise to top charts.
PC gaming market is much bigger than mobile gaming market. I read some statistics here on the thread provided by a user, they need to consider also entering the pc gaming market because there are more players on PC than mobile.