That's bad, lucky for me I use iPhone as phone only and play games on computer and bigger screen.
But it would be nice to play our Mario sometimes on favorite cell phone without internet connection.
People buy usually iPhone and they are ready to pay some content and apps, games, for me iPhone after jailbrake not worth as original.
That action somehow destroy image of shiny iPhone.
Only is good because people could restore him, because if jailbrake is forever that would seriously drop price of used iPhone from my perspective.