There is at least a market for an API toolkit where you could choose an API model, security features, the DB to connect to, the language to use and the data model.
Sounds like what Mashery does mentioned in the thread.
I don't think so (based on what I read). They want to manage your APIs and add functionalities that you're missing, like the extra layers of security. They don't provide you with a way to build your API to publish your data.