The problem is you don't have the mindset of Joe Average. It's something most of us lose as we become nerds, enthusiasts, professionals, etc. We become disconnected with the commons.
As a Joe Average, computers are an appliance and the internet is merely a service like broadcast television. Reddit is merely a channel on broadcast television like CNN or BBC, and it's natural to use Reddit to use Reddit. Do you watch something other than BBC to watch BBC?
I agree with the crowd saying that this subreddit privatisation strike will have limited effect at most. Most people don't care and aren't affected, and that's the cold reality. Reddit itself is far beyond the point of critical mass, if there are even whispers that this strike is insufficient that means it is insufficient in the grander scale.
As another bit of anecdote, I remember when Digg died. It died overnight. Literally. One day everyone was talking about and on Digg, the next day everyone wasn't. When something on the internet dies, it dies. There are no rumors or murmurs of impending death, it just dies.