[qopp]

One comment: The “dragging a slider to the right” math is assuming all players that pay $25/month are playing the entire month non-stop. In reality it goes in waves. Using the "22.7 hours a week" from WoW, that's only 0.13/user/month. Cloud computing capitalizes on this by renting per hour to capture the waves. This means a 25$/month user is only costing $2.5 for server usage which seems right.