Ask HN: Is there a "SaaS-as"? Heroku for SaaS?

I like writing apps but the overhead of setting up all the parts to support them is a pain. (ex. landing page, newsletter sign up, recurring payments, blog, knowledge base, etc). It would be nice to have a hosted platform for getting a company up and going.

So it'd be: Unbounce + Themeforest + Wordpress + Recurly + WooForms + Zen Desk + ???

Anything like this exist? Ideally it would use API from these services and have bundled deals in place. Skinnable so you can use your own branding.

If not, would anyone use such a service?