[FavouriteColour]

Yes. I was thinking of third-party software that may take many years to port to ARM. Photoshop, Etc.

Apple’s position would then be: great battery life unless you need to run old intel software.

[pjc50]

Ironically you chose one of the examples that's already been over a porting barrier from a RISC architecture: Photoshop up to (I think) CS4 ran on PowerPC.

[ryanpetrich]

And since Photoshop has been announced for the iPad, the porting for the architecture-dependent components of it have already been performed.