This article is somewhat blogospam.

But it does raise a point that I wanted to mention. In many cases (and Windsoc is such a case) when you are trying to sell to developers, your competition isn't the developer's wish to "do it myself". Your actual competition is the plethora of open source tools that already do the thing that you're trying to sell.

Software development has changed, and those vendors trying to build a business selling libraries and toolkits are going to find it difficult to stay relevant.

Protip: If a search on http://ruby-toolbox.com/ turns up half a dozen gems that do the same thing that you're trying to sell, well, you're doing it wrong.