Stardock’s Cider Cloud engine

Something I’ve never quite understood about cloud computing that can offload a lot of cycles… who pays for this? Let’s say a game offloads a ton of computation cycles to the cloud, and also complex shadow rendering… and then a million people buy the game and they all play at 5:30 pm on weekdays. Who has the capacity to pay for this because unless there’s a monthly fee or onerous extra pay to win, that’s all cost that will always cut into a developer/publisher’s bottom line?