I strongly disagree with this opinion. First, the reason that people make big money coming up with custom solutions for Wordpress is because its a lot of work

I strongly disagree with this opinion. First, the reason that people make big money coming up with custom solutions for Wordpress is because its a lot of work to get things to the state of "exactly what the client wants". It would be a distraction and a waste of time to pursue the creation of many "starter" niches. I find it kind of ironic that the author suggests that they step back and take a look at the forest while suggesting they take a more myopic view of Posterous as a business. The reason Posterous isn't a blog consulting company is the same reason Facebook isn't a gaming company but is rather a platform for gaming companies (and many other things). Second, it doesn't fit into the goal of Posterous as a company which from my external perspective appears to be making blogging stupidly easy and accessible for anyone. Third, scale first. Its easy to attack verticals later once you already own the space (in this case blogging).