[Almad]

I do believe we'll be providing on-premise instances as Github does in the future.

However, as github hasn't provided this from year one, so are we. Choosing priorities is hard in startup and on-premise takes a lot of resources.

...which is what seed is for ;)

Meanwhile, you can still use our format separately from Apiary SaaS. Please take a look: http://apiblueprint.org/