I'm just going to be a little cynic here:
Bill Gates is still too attached to MS, of course, he build it. If Apple did what the feds asked it, this would back-fire Apple consumers.
1. People would just no longer trust Apple, which translates into less devices bought.
2. This won't prevent terrorist or whatever their excuse is. If terrorist know Apple does this, they will just use other devices.
At end, only us, the normal consumer loose with this.
This would just help MS and other companies to gain more market by screwing up Apple. Until the feds come after these other companies that is...