@satchmoz the SCUBA example is extreme because I am an autodidact, and actually can't learn like other folks. But from trying to make the case for free desktops for decades at this point, the impression I've gotten is that folks can't imagine how a free software ecosystem works.
Reasons I've heard over the years include: free software must be a scam, no one will help if I am hacked, that didn't come with my computer, it must not be worth money if it is free, etc.