Exactly what research is your theory based on? Proof? This canard has been around for a long time, probably because in the past a lot of school teachers and artists did use Macs... but they are a very small minority of Mac users.
I guess my proof would be experience.
I will leave it as I greatly disagree with with your assessment of Rusty's infuence on Apple. I believe the iPod/iTunes had about 99.9999% to Rusty's 0.0001% affect on Apple's recovery.