Is this statement actually true?

"If you purchased a laptop today, you are more likely to have purchased a Mac over any other type of computer. If you’re someone who makes over $250,000 per year, and you purchased a laptop, you almost certainly purchased a Macbook Pro."

Wikipedia seems to indicate that a reasonable estimate of OSX market share would be around 10%, with 20% on the high end (Steve Jobs claimed 20% in 10/2010). http://en.wikipedia.org/wiki/Usage_share_of_operating_system...

If that statement is not true, doesn't that significantly undercut the author's argument?