This strikes me as largely a symbolic action by the Chinese government, not based on a significant, real threat.
The irony is that most consumer electronic products are manufactured in China, with components from China. The Chinese government has a great deal of control over everything that happens in China. It seems that the world should be even more concerned about Chinese government spying though manipulation of electronic products than even the NSA can accomplish.
Do you really know what the components in your Chinese built PC are doing?
Is this a reasonable concern or am I way off base?
To be completely cynical, I would guess the Chinese got a wake-up call and realized their snooping program doesn't work so well unless people have to use Chinese-snoop enbaled produces. I can imagine the dialogue during a meeting between Chinese snoopers and Apple manglers - but that has been redcated from this message in the interests of universal peace and harmony.
This is where I see the slippery slope beginning. The Chinese can block imports of the leading Apple products (which they manufactured) because of perceived security threats. Conveniently enough, this promotes Chinese domestic products in their place.