Initiating a project, a blog, a wikipedia article, a family journey–these are things that don't come naturally to many people. The challenge is in initiating something even when you're not putatively in charge. Not enough people believe they are capable of productive initiative.
At the same time, almost all people believe they are capable of editing, giving feedback or merely criticizing.
So finding people to fix your typos is easy.
I don't think the shortage of artists has much to do with the innate ability to create or initiate. I think it has to do with believing that it's possible and acceptable for you to do it. We've only had these particular doors open wide for a decade or so, and most people have been brainwashed into believing that their job is to copyedit the world, not to design it.
That used to be your job. It's not, not anymore. You go first.