Scenario 2:
Imagine this. Apple announces new Powerbooks and Mac minis at Macworld: To ship as soon as possible.
The Developer community, in unison, goes "HOLY S***!!!!!" and then "Oh Well SC**W Apple anyway!".
Let the teeny weeny tiny .01 % market share of OS X x86 users go without native versions. If they really want our software they can either run it in Rosetta , reboot into XP and buy XP native versions of our software , or run Wine for OSX and run XP native versions of our software. They'll have to do it for games anyway, so why not pro software.
This OS X to x86 transition is great! Now we only have to develop for Windows x86 native versions of our software and the mac users can use it too. No more creating mac only software. Woohoo!