I think "heroku-like" is a good generative metaphor. As for the market existing or not I think there are way more variables at play than that previous comment seems to account for and there's so much room in the cloud solutions market as it continues to grow. Also I could always see an exit where Amazon see's traction and acquires Stacktape to compliment it's existing solutions and fend off other "no dev-ops" solutions.

Good luck, product looks awesome!