Yes, and the "not that hard" remark was in reference to their deep experience moving from 68K to PPC to x86. So, having fat binaries is not a foreign concept to them at all.
Integrating iOS apps (where users are already conditioned to being exposed to advertising) with some version of OS X would not be a big leap from a technical or business strategy perspective.
Apple has filed a patent on OS-level advertising. http://ipwatchdog.com/2009/10/22/jobs-and-apple-seek-patent-...
Integrating iOS apps (where users are already conditioned to being exposed to advertising) with some version of OS X would not be a big leap from a technical or business strategy perspective.