[saagarjha]

I don't feel that the parent comment was "niche". This argument comes up every time anyone discusses a architecture switch, and the invariable response is that Apple has already done this twice before with an emulation layer.

[ascagnel_]

And, if anything, it's easier now than in the past. Most code has been abstracted away from the bare metal, so it's more a matter of porting runtime environments over (V8, JRE, etc) than it is rewriting apps.