One of the most common objections raised when considering a move to free software goes something like “I can’t switch, because my favorite program isn’t available on GNU/Linux.” They perceive the inability to run a specific piece of proprietary software as a technical deficiency of the free system. They see it as a bug. This reaction misunderstands the point of the transition: They’re judging the free world by its ability to replicate the prison walls they just left.
A mind-boggling amount of work has gone into lowering the barrier of entry. I think as the gap continues to close, it’ll become a less compelling “selling point”