I should have been made it more clear but what I meant what that the potential for unposted content if posted is generally zero.

Blogs and advertising have ongoing costs and maintenance requirements but they also have a critical mass and discoverability problem.

Any new blog that doesn't get regular content or has only a small amount of content (for example think of a blog with only one page but where the page is interesting) won't get indexed and ranked well which means even if the content is good it will probably never get seen and hence be worth zero even with advertising.

As a comparison, if you posted a Bitcoin article to the Bitcoin subreddit vs to a random blog where you did no significant additional work to promote it the same work would do a lot better in the subreddit where people interested in that area were already gathering.

But you can't put ads on your Reddit content and Reddit also don't like people just posting links to their own blogs, particularly if you don't post much or anything else.