Oh my gosh I just figured it out.
Okay, all you open source evangelist people: your knee-jerk reaction to come at people who are talking about a problem with whatever commercial software they use and suggest Your Favorite Alternatives™ is exactly like saying "why don't you just buy a house?" to someone complaining about their landlord.
EDIT: There's more than one post here. Pick apart the analogy if you will but... beware you'll be proving the point.